/*
 * Copyright 2020 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
// Generated by the protocol buffer compiler.  DO NOT EDIT!
// source: google/cloud/dialogflow/v2/environment.proto

package com.google.cloud.dialogflow.v2;

/**
 *
 *
 * <pre>
 * The response message for
 * [Environments.GetEnvironmentHistory][google.cloud.dialogflow.v2.Environments.GetEnvironmentHistory].
 * </pre>
 *
 * Protobuf type {@code google.cloud.dialogflow.v2.EnvironmentHistory}
 */
public final class EnvironmentHistory extends com.google.protobuf.GeneratedMessageV3
    implements
    // @@protoc_insertion_point(message_implements:google.cloud.dialogflow.v2.EnvironmentHistory)
    EnvironmentHistoryOrBuilder {
  private static final long serialVersionUID = 0L;
  // Use EnvironmentHistory.newBuilder() to construct.
  private EnvironmentHistory(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
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  }

  private EnvironmentHistory() {
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  }

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  protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
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    /**
     *
     *
     * <pre>
     * The agent version loaded into this environment history entry.
     * </pre>
     *
     * <code>string agent_version = 1;</code>
     *
     * @return The agentVersion.
     */
    java.lang.String getAgentVersion();
    /**
     *
     *
     * <pre>
     * The agent version loaded into this environment history entry.
     * </pre>
     *
     * <code>string agent_version = 1;</code>
     *
     * @return The bytes for agentVersion.
     */
    com.google.protobuf.ByteString getAgentVersionBytes();

    /**
     *
     *
     * <pre>
     * The developer-provided description for this environment history entry.
     * </pre>
     *
     * <code>string description = 2;</code>
     *
     * @return The description.
     */
    java.lang.String getDescription();
    /**
     *
     *
     * <pre>
     * The developer-provided description for this environment history entry.
     * </pre>
     *
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     *
     * @return The bytes for description.
     */
    com.google.protobuf.ByteString getDescriptionBytes();

    /**
     *
     *
     * <pre>
     * The creation time of this environment history entry.
     * </pre>
     *
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     *
     * @return Whether the createTime field is set.
     */
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    /**
     *
     *
     * <pre>
     * The creation time of this environment history entry.
     * </pre>
     *
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     *
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     */
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    /**
     *
     *
     * <pre>
     * The creation time of this environment history entry.
     * </pre>
     *
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     */
    com.google.protobuf.TimestampOrBuilder getCreateTimeOrBuilder();
  }
  /**
   *
   *
   * <pre>
   * Represents an environment history entry.
   * </pre>
   *
   * Protobuf type {@code google.cloud.dialogflow.v2.EnvironmentHistory.Entry}
   */
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    /**
     *
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     * <pre>
     * The agent version loaded into this environment history entry.
     * </pre>
     *
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     *
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     *
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     *
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     *
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     *
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     *
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     *
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     * <pre>
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     *
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     *
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     * <pre>
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     *
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       * @return This builder for chaining.
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      public Builder setAgentVersion(java.lang.String value) {
        if (value == null) {
          throw new NullPointerException();
        }
        agentVersion_ = value;
        bitField0_ |= 0x00000001;
        onChanged();
        return this;
      }
      /**
       *
       *
       * <pre>
       * The agent version loaded into this environment history entry.
       * </pre>
       *
       * <code>string agent_version = 1;</code>
       *
       * @return This builder for chaining.
       */
      public Builder clearAgentVersion() {
        agentVersion_ = getDefaultInstance().getAgentVersion();
        bitField0_ = (bitField0_ & ~0x00000001);
        onChanged();
        return this;
      }
      /**
       *
       *
       * <pre>
       * The agent version loaded into this environment history entry.
       * </pre>
       *
       * <code>string agent_version = 1;</code>
       *
       * @param value The bytes for agentVersion to set.
       * @return This builder for chaining.
       */
      public Builder setAgentVersionBytes(com.google.protobuf.ByteString value) {
        if (value == null) {
          throw new NullPointerException();
        }
        checkByteStringIsUtf8(value);
        agentVersion_ = value;
        bitField0_ |= 0x00000001;
        onChanged();
        return this;
      }

      private java.lang.Object description_ = "";
      /**
       *
       *
       * <pre>
       * The developer-provided description for this environment history entry.
       * </pre>
       *
       * <code>string description = 2;</code>
       *
       * @return The description.
       */
      public java.lang.String getDescription() {
        java.lang.Object ref = description_;
        if (!(ref instanceof java.lang.String)) {
          com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
          java.lang.String s = bs.toStringUtf8();
          description_ = s;
          return s;
        } else {
          return (java.lang.String) ref;
        }
      }
      /**
       *
       *
       * <pre>
       * The developer-provided description for this environment history entry.
       * </pre>
       *
       * <code>string description = 2;</code>
       *
       * @return The bytes for description.
       */
      public com.google.protobuf.ByteString getDescriptionBytes() {
        java.lang.Object ref = description_;
        if (ref instanceof String) {
          com.google.protobuf.ByteString b =
              com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
          description_ = b;
          return b;
        } else {
          return (com.google.protobuf.ByteString) ref;
        }
      }
      /**
       *
       *
       * <pre>
       * The developer-provided description for this environment history entry.
       * </pre>
       *
       * <code>string description = 2;</code>
       *
       * @param value The description to set.
       * @return This builder for chaining.
       */
      public Builder setDescription(java.lang.String value) {
        if (value == null) {
          throw new NullPointerException();
        }
        description_ = value;
        bitField0_ |= 0x00000002;
        onChanged();
        return this;
      }
      /**
       *
       *
       * <pre>
       * The developer-provided description for this environment history entry.
       * </pre>
       *
       * <code>string description = 2;</code>
       *
       * @return This builder for chaining.
       */
      public Builder clearDescription() {
        description_ = getDefaultInstance().getDescription();
        bitField0_ = (bitField0_ & ~0x00000002);
        onChanged();
        return this;
      }
      /**
       *
       *
       * <pre>
       * The developer-provided description for this environment history entry.
       * </pre>
       *
       * <code>string description = 2;</code>
       *
       * @param value The bytes for description to set.
       * @return This builder for chaining.
       */
      public Builder setDescriptionBytes(com.google.protobuf.ByteString value) {
        if (value == null) {
          throw new NullPointerException();
        }
        checkByteStringIsUtf8(value);
        description_ = value;
        bitField0_ |= 0x00000002;
        onChanged();
        return this;
      }

      private com.google.protobuf.Timestamp createTime_;
      private com.google.protobuf.SingleFieldBuilderV3<
              com.google.protobuf.Timestamp,
              com.google.protobuf.Timestamp.Builder,
              com.google.protobuf.TimestampOrBuilder>
          createTimeBuilder_;
      /**
       *
       *
       * <pre>
       * The creation time of this environment history entry.
       * </pre>
       *
       * <code>.google.protobuf.Timestamp create_time = 3;</code>
       *
       * @return Whether the createTime field is set.
       */
      public boolean hasCreateTime() {
        return ((bitField0_ & 0x00000004) != 0);
      }
      /**
       *
       *
       * <pre>
       * The creation time of this environment history entry.
       * </pre>
       *
       * <code>.google.protobuf.Timestamp create_time = 3;</code>
       *
       * @return The createTime.
       */
      public com.google.protobuf.Timestamp getCreateTime() {
        if (createTimeBuilder_ == null) {
          return createTime_ == null
              ? com.google.protobuf.Timestamp.getDefaultInstance()
              : createTime_;
        } else {
          return createTimeBuilder_.getMessage();
        }
      }
      /**
       *
       *
       * <pre>
       * The creation time of this environment history entry.
       * </pre>
       *
       * <code>.google.protobuf.Timestamp create_time = 3;</code>
       */
      public Builder setCreateTime(com.google.protobuf.Timestamp value) {
        if (createTimeBuilder_ == null) {
          if (value == null) {
            throw new NullPointerException();
          }
          createTime_ = value;
        } else {
          createTimeBuilder_.setMessage(value);
        }
        bitField0_ |= 0x00000004;
        onChanged();
        return this;
      }
      /**
       *
       *
       * <pre>
       * The creation time of this environment history entry.
       * </pre>
       *
       * <code>.google.protobuf.Timestamp create_time = 3;</code>
       */
      public Builder setCreateTime(com.google.protobuf.Timestamp.Builder builderForValue) {
        if (createTimeBuilder_ == null) {
          createTime_ = builderForValue.build();
        } else {
          createTimeBuilder_.setMessage(builderForValue.build());
        }
        bitField0_ |= 0x00000004;
        onChanged();
        return this;
      }
      /**
       *
       *
       * <pre>
       * The creation time of this environment history entry.
       * </pre>
       *
       * <code>.google.protobuf.Timestamp create_time = 3;</code>
       */
      public Builder mergeCreateTime(com.google.protobuf.Timestamp value) {
        if (createTimeBuilder_ == null) {
          if (((bitField0_ & 0x00000004) != 0)
              && createTime_ != null
              && createTime_ != com.google.protobuf.Timestamp.getDefaultInstance()) {
            getCreateTimeBuilder().mergeFrom(value);
          } else {
            createTime_ = value;
          }
        } else {
          createTimeBuilder_.mergeFrom(value);
        }
        bitField0_ |= 0x00000004;
        onChanged();
        return this;
      }
      /**
       *
       *
       * <pre>
       * The creation time of this environment history entry.
       * </pre>
       *
       * <code>.google.protobuf.Timestamp create_time = 3;</code>
       */
      public Builder clearCreateTime() {
        bitField0_ = (bitField0_ & ~0x00000004);
        createTime_ = null;
        if (createTimeBuilder_ != null) {
          createTimeBuilder_.dispose();
          createTimeBuilder_ = null;
        }
        onChanged();
        return this;
      }
      /**
       *
       *
       * <pre>
       * The creation time of this environment history entry.
       * </pre>
       *
       * <code>.google.protobuf.Timestamp create_time = 3;</code>
       */
      public com.google.protobuf.Timestamp.Builder getCreateTimeBuilder() {
        bitField0_ |= 0x00000004;
        onChanged();
        return getCreateTimeFieldBuilder().getBuilder();
      }
      /**
       *
       *
       * <pre>
       * The creation time of this environment history entry.
       * </pre>
       *
       * <code>.google.protobuf.Timestamp create_time = 3;</code>
       */
      public com.google.protobuf.TimestampOrBuilder getCreateTimeOrBuilder() {
        if (createTimeBuilder_ != null) {
          return createTimeBuilder_.getMessageOrBuilder();
        } else {
          return createTime_ == null
              ? com.google.protobuf.Timestamp.getDefaultInstance()
              : createTime_;
        }
      }
      /**
       *
       *
       * <pre>
       * The creation time of this environment history entry.
       * </pre>
       *
       * <code>.google.protobuf.Timestamp create_time = 3;</code>
       */
      private com.google.protobuf.SingleFieldBuilderV3<
              com.google.protobuf.Timestamp,
              com.google.protobuf.Timestamp.Builder,
              com.google.protobuf.TimestampOrBuilder>
          getCreateTimeFieldBuilder() {
        if (createTimeBuilder_ == null) {
          createTimeBuilder_ =
              new com.google.protobuf.SingleFieldBuilderV3<
                  com.google.protobuf.Timestamp,
                  com.google.protobuf.Timestamp.Builder,
                  com.google.protobuf.TimestampOrBuilder>(
                  getCreateTime(), getParentForChildren(), isClean());
          createTime_ = null;
        }
        return createTimeBuilder_;
      }

      @java.lang.Override
      public final Builder setUnknownFields(
          final com.google.protobuf.UnknownFieldSet unknownFields) {
        return super.setUnknownFields(unknownFields);
      }

      @java.lang.Override
      public final Builder mergeUnknownFields(
          final com.google.protobuf.UnknownFieldSet unknownFields) {
        return super.mergeUnknownFields(unknownFields);
      }

      // @@protoc_insertion_point(builder_scope:google.cloud.dialogflow.v2.EnvironmentHistory.Entry)
    }

    // @@protoc_insertion_point(class_scope:google.cloud.dialogflow.v2.EnvironmentHistory.Entry)
    private static final com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry DEFAULT_INSTANCE;

    static {
      DEFAULT_INSTANCE = new com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry();
    }

    public static com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry getDefaultInstance() {
      return DEFAULT_INSTANCE;
    }

    private static final com.google.protobuf.Parser<Entry> PARSER =
        new com.google.protobuf.AbstractParser<Entry>() {
          @java.lang.Override
          public Entry parsePartialFrom(
              com.google.protobuf.CodedInputStream input,
              com.google.protobuf.ExtensionRegistryLite extensionRegistry)
              throws com.google.protobuf.InvalidProtocolBufferException {
            Builder builder = newBuilder();
            try {
              builder.mergeFrom(input, extensionRegistry);
            } catch (com.google.protobuf.InvalidProtocolBufferException e) {
              throw e.setUnfinishedMessage(builder.buildPartial());
            } catch (com.google.protobuf.UninitializedMessageException e) {
              throw e.asInvalidProtocolBufferException()
                  .setUnfinishedMessage(builder.buildPartial());
            } catch (java.io.IOException e) {
              throw new com.google.protobuf.InvalidProtocolBufferException(e)
                  .setUnfinishedMessage(builder.buildPartial());
            }
            return builder.buildPartial();
          }
        };

    public static com.google.protobuf.Parser<Entry> parser() {
      return PARSER;
    }

    @java.lang.Override
    public com.google.protobuf.Parser<Entry> getParserForType() {
      return PARSER;
    }

    @java.lang.Override
    public com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry getDefaultInstanceForType() {
      return DEFAULT_INSTANCE;
    }
  }

  public static final int PARENT_FIELD_NUMBER = 1;

  @SuppressWarnings("serial")
  private volatile java.lang.Object parent_ = "";
  /**
   *
   *
   * <pre>
   * Output only. The name of the environment this history is for.
   * Supported formats:
   * - `projects/&lt;Project ID&gt;/agent/environments/&lt;Environment ID&gt;`
   * - `projects/&lt;Project ID&gt;/locations/&lt;Location
   *    ID&gt;/agent/environments/&lt;Environment ID&gt;`
   * The environment ID for the default environment is `-`.
   * </pre>
   *
   * <code>string parent = 1 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
   *
   * @return The parent.
   */
  @java.lang.Override
  public java.lang.String getParent() {
    java.lang.Object ref = parent_;
    if (ref instanceof java.lang.String) {
      return (java.lang.String) ref;
    } else {
      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
      java.lang.String s = bs.toStringUtf8();
      parent_ = s;
      return s;
    }
  }
  /**
   *
   *
   * <pre>
   * Output only. The name of the environment this history is for.
   * Supported formats:
   * - `projects/&lt;Project ID&gt;/agent/environments/&lt;Environment ID&gt;`
   * - `projects/&lt;Project ID&gt;/locations/&lt;Location
   *    ID&gt;/agent/environments/&lt;Environment ID&gt;`
   * The environment ID for the default environment is `-`.
   * </pre>
   *
   * <code>string parent = 1 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
   *
   * @return The bytes for parent.
   */
  @java.lang.Override
  public com.google.protobuf.ByteString getParentBytes() {
    java.lang.Object ref = parent_;
    if (ref instanceof java.lang.String) {
      com.google.protobuf.ByteString b =
          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
      parent_ = b;
      return b;
    } else {
      return (com.google.protobuf.ByteString) ref;
    }
  }

  public static final int ENTRIES_FIELD_NUMBER = 2;

  @SuppressWarnings("serial")
  private java.util.List<com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry> entries_;
  /**
   *
   *
   * <pre>
   * Output only. The list of agent environments. There will be a maximum number
   * of items returned based on the page_size field in the request.
   * </pre>
   *
   * <code>
   * repeated .google.cloud.dialogflow.v2.EnvironmentHistory.Entry entries = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];
   * </code>
   */
  @java.lang.Override
  public java.util.List<com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry> getEntriesList() {
    return entries_;
  }
  /**
   *
   *
   * <pre>
   * Output only. The list of agent environments. There will be a maximum number
   * of items returned based on the page_size field in the request.
   * </pre>
   *
   * <code>
   * repeated .google.cloud.dialogflow.v2.EnvironmentHistory.Entry entries = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];
   * </code>
   */
  @java.lang.Override
  public java.util.List<? extends com.google.cloud.dialogflow.v2.EnvironmentHistory.EntryOrBuilder>
      getEntriesOrBuilderList() {
    return entries_;
  }
  /**
   *
   *
   * <pre>
   * Output only. The list of agent environments. There will be a maximum number
   * of items returned based on the page_size field in the request.
   * </pre>
   *
   * <code>
   * repeated .google.cloud.dialogflow.v2.EnvironmentHistory.Entry entries = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];
   * </code>
   */
  @java.lang.Override
  public int getEntriesCount() {
    return entries_.size();
  }
  /**
   *
   *
   * <pre>
   * Output only. The list of agent environments. There will be a maximum number
   * of items returned based on the page_size field in the request.
   * </pre>
   *
   * <code>
   * repeated .google.cloud.dialogflow.v2.EnvironmentHistory.Entry entries = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];
   * </code>
   */
  @java.lang.Override
  public com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry getEntries(int index) {
    return entries_.get(index);
  }
  /**
   *
   *
   * <pre>
   * Output only. The list of agent environments. There will be a maximum number
   * of items returned based on the page_size field in the request.
   * </pre>
   *
   * <code>
   * repeated .google.cloud.dialogflow.v2.EnvironmentHistory.Entry entries = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];
   * </code>
   */
  @java.lang.Override
  public com.google.cloud.dialogflow.v2.EnvironmentHistory.EntryOrBuilder getEntriesOrBuilder(
      int index) {
    return entries_.get(index);
  }

  public static final int NEXT_PAGE_TOKEN_FIELD_NUMBER = 3;

  @SuppressWarnings("serial")
  private volatile java.lang.Object nextPageToken_ = "";
  /**
   *
   *
   * <pre>
   * Output only. Token to retrieve the next page of results, or empty if there
   * are no more results in the list.
   * </pre>
   *
   * <code>string next_page_token = 3 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
   *
   * @return The nextPageToken.
   */
  @java.lang.Override
  public java.lang.String getNextPageToken() {
    java.lang.Object ref = nextPageToken_;
    if (ref instanceof java.lang.String) {
      return (java.lang.String) ref;
    } else {
      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
      java.lang.String s = bs.toStringUtf8();
      nextPageToken_ = s;
      return s;
    }
  }
  /**
   *
   *
   * <pre>
   * Output only. Token to retrieve the next page of results, or empty if there
   * are no more results in the list.
   * </pre>
   *
   * <code>string next_page_token = 3 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
   *
   * @return The bytes for nextPageToken.
   */
  @java.lang.Override
  public com.google.protobuf.ByteString getNextPageTokenBytes() {
    java.lang.Object ref = nextPageToken_;
    if (ref instanceof java.lang.String) {
      com.google.protobuf.ByteString b =
          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
      nextPageToken_ = b;
      return b;
    } else {
      return (com.google.protobuf.ByteString) ref;
    }
  }

  private byte memoizedIsInitialized = -1;

  @java.lang.Override
  public final boolean isInitialized() {
    byte isInitialized = memoizedIsInitialized;
    if (isInitialized == 1) return true;
    if (isInitialized == 0) return false;

    memoizedIsInitialized = 1;
    return true;
  }

  @java.lang.Override
  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(parent_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 1, parent_);
    }
    for (int i = 0; i < entries_.size(); i++) {
      output.writeMessage(2, entries_.get(i));
    }
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(nextPageToken_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 3, nextPageToken_);
    }
    getUnknownFields().writeTo(output);
  }

  @java.lang.Override
  public int getSerializedSize() {
    int size = memoizedSize;
    if (size != -1) return size;

    size = 0;
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(parent_)) {
      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, parent_);
    }
    for (int i = 0; i < entries_.size(); i++) {
      size += com.google.protobuf.CodedOutputStream.computeMessageSize(2, entries_.get(i));
    }
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(nextPageToken_)) {
      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, nextPageToken_);
    }
    size += getUnknownFields().getSerializedSize();
    memoizedSize = size;
    return size;
  }

  @java.lang.Override
  public boolean equals(final java.lang.Object obj) {
    if (obj == this) {
      return true;
    }
    if (!(obj instanceof com.google.cloud.dialogflow.v2.EnvironmentHistory)) {
      return super.equals(obj);
    }
    com.google.cloud.dialogflow.v2.EnvironmentHistory other =
        (com.google.cloud.dialogflow.v2.EnvironmentHistory) obj;

    if (!getParent().equals(other.getParent())) return false;
    if (!getEntriesList().equals(other.getEntriesList())) return false;
    if (!getNextPageToken().equals(other.getNextPageToken())) return false;
    if (!getUnknownFields().equals(other.getUnknownFields())) return false;
    return true;
  }

  @java.lang.Override
  public int hashCode() {
    if (memoizedHashCode != 0) {
      return memoizedHashCode;
    }
    int hash = 41;
    hash = (19 * hash) + getDescriptor().hashCode();
    hash = (37 * hash) + PARENT_FIELD_NUMBER;
    hash = (53 * hash) + getParent().hashCode();
    if (getEntriesCount() > 0) {
      hash = (37 * hash) + ENTRIES_FIELD_NUMBER;
      hash = (53 * hash) + getEntriesList().hashCode();
    }
    hash = (37 * hash) + NEXT_PAGE_TOKEN_FIELD_NUMBER;
    hash = (53 * hash) + getNextPageToken().hashCode();
    hash = (29 * hash) + getUnknownFields().hashCode();
    memoizedHashCode = hash;
    return hash;
  }

  public static com.google.cloud.dialogflow.v2.EnvironmentHistory parseFrom(
      java.nio.ByteBuffer data) throws com.google.protobuf.InvalidProtocolBufferException {
    return PARSER.parseFrom(data);
  }

  public static com.google.cloud.dialogflow.v2.EnvironmentHistory parseFrom(
      java.nio.ByteBuffer data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
      throws com.google.protobuf.InvalidProtocolBufferException {
    return PARSER.parseFrom(data, extensionRegistry);
  }

  public static com.google.cloud.dialogflow.v2.EnvironmentHistory parseFrom(
      com.google.protobuf.ByteString data)
      throws com.google.protobuf.InvalidProtocolBufferException {
    return PARSER.parseFrom(data);
  }

  public static com.google.cloud.dialogflow.v2.EnvironmentHistory parseFrom(
      com.google.protobuf.ByteString data,
      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
      throws com.google.protobuf.InvalidProtocolBufferException {
    return PARSER.parseFrom(data, extensionRegistry);
  }

  public static com.google.cloud.dialogflow.v2.EnvironmentHistory parseFrom(byte[] data)
      throws com.google.protobuf.InvalidProtocolBufferException {
    return PARSER.parseFrom(data);
  }

  public static com.google.cloud.dialogflow.v2.EnvironmentHistory parseFrom(
      byte[] data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
      throws com.google.protobuf.InvalidProtocolBufferException {
    return PARSER.parseFrom(data, extensionRegistry);
  }

  public static com.google.cloud.dialogflow.v2.EnvironmentHistory parseFrom(
      java.io.InputStream input) throws java.io.IOException {
    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(PARSER, input);
  }

  public static com.google.cloud.dialogflow.v2.EnvironmentHistory parseFrom(
      java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
      throws java.io.IOException {
    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(
        PARSER, input, extensionRegistry);
  }

  public static com.google.cloud.dialogflow.v2.EnvironmentHistory parseDelimitedFrom(
      java.io.InputStream input) throws java.io.IOException {
    return com.google.protobuf.GeneratedMessageV3.parseDelimitedWithIOException(PARSER, input);
  }

  public static com.google.cloud.dialogflow.v2.EnvironmentHistory parseDelimitedFrom(
      java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
      throws java.io.IOException {
    return com.google.protobuf.GeneratedMessageV3.parseDelimitedWithIOException(
        PARSER, input, extensionRegistry);
  }

  public static com.google.cloud.dialogflow.v2.EnvironmentHistory parseFrom(
      com.google.protobuf.CodedInputStream input) throws java.io.IOException {
    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(PARSER, input);
  }

  public static com.google.cloud.dialogflow.v2.EnvironmentHistory parseFrom(
      com.google.protobuf.CodedInputStream input,
      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
      throws java.io.IOException {
    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(
        PARSER, input, extensionRegistry);
  }

  @java.lang.Override
  public Builder newBuilderForType() {
    return newBuilder();
  }

  public static Builder newBuilder() {
    return DEFAULT_INSTANCE.toBuilder();
  }

  public static Builder newBuilder(com.google.cloud.dialogflow.v2.EnvironmentHistory prototype) {
    return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
  }

  @java.lang.Override
  public Builder toBuilder() {
    return this == DEFAULT_INSTANCE ? new Builder() : new Builder().mergeFrom(this);
  }

  @java.lang.Override
  protected Builder newBuilderForType(com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
    Builder builder = new Builder(parent);
    return builder;
  }
  /**
   *
   *
   * <pre>
   * The response message for
   * [Environments.GetEnvironmentHistory][google.cloud.dialogflow.v2.Environments.GetEnvironmentHistory].
   * </pre>
   *
   * Protobuf type {@code google.cloud.dialogflow.v2.EnvironmentHistory}
   */
  public static final class Builder extends com.google.protobuf.GeneratedMessageV3.Builder<Builder>
      implements
      // @@protoc_insertion_point(builder_implements:google.cloud.dialogflow.v2.EnvironmentHistory)
      com.google.cloud.dialogflow.v2.EnvironmentHistoryOrBuilder {
    public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
      return com.google.cloud.dialogflow.v2.EnvironmentProto
          .internal_static_google_cloud_dialogflow_v2_EnvironmentHistory_descriptor;
    }

    @java.lang.Override
    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
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    }

    // Construct using com.google.cloud.dialogflow.v2.EnvironmentHistory.newBuilder()
    private Builder() {}

    private Builder(com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
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    @java.lang.Override
    public com.google.protobuf.Descriptors.Descriptor getDescriptorForType() {
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          .internal_static_google_cloud_dialogflow_v2_EnvironmentHistory_descriptor;
    }

    @java.lang.Override
    public com.google.cloud.dialogflow.v2.EnvironmentHistory getDefaultInstanceForType() {
      return com.google.cloud.dialogflow.v2.EnvironmentHistory.getDefaultInstance();
    }

    @java.lang.Override
    public com.google.cloud.dialogflow.v2.EnvironmentHistory build() {
      com.google.cloud.dialogflow.v2.EnvironmentHistory result = buildPartial();
      if (!result.isInitialized()) {
        throw newUninitializedMessageException(result);
      }
      return result;
    }

    @java.lang.Override
    public com.google.cloud.dialogflow.v2.EnvironmentHistory buildPartial() {
      com.google.cloud.dialogflow.v2.EnvironmentHistory result =
          new com.google.cloud.dialogflow.v2.EnvironmentHistory(this);
      buildPartialRepeatedFields(result);
      if (bitField0_ != 0) {
        buildPartial0(result);
      }
      onBuilt();
      return result;
    }

    private void buildPartialRepeatedFields(
        com.google.cloud.dialogflow.v2.EnvironmentHistory result) {
      if (entriesBuilder_ == null) {
        if (((bitField0_ & 0x00000002) != 0)) {
          entries_ = java.util.Collections.unmodifiableList(entries_);
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    @java.lang.Override
    public Builder clone() {
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    @java.lang.Override
    public Builder setField(
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      return super.setField(field, value);
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    @java.lang.Override
    public Builder clearField(com.google.protobuf.Descriptors.FieldDescriptor field) {
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    @java.lang.Override
    public Builder clearOneof(com.google.protobuf.Descriptors.OneofDescriptor oneof) {
      return super.clearOneof(oneof);
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    public Builder setRepeatedField(
        com.google.protobuf.Descriptors.FieldDescriptor field, int index, java.lang.Object value) {
      return super.setRepeatedField(field, index, value);
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    @java.lang.Override
    public Builder addRepeatedField(
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      return super.addRepeatedField(field, value);
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    @java.lang.Override
    public Builder mergeFrom(com.google.protobuf.Message other) {
      if (other instanceof com.google.cloud.dialogflow.v2.EnvironmentHistory) {
        return mergeFrom((com.google.cloud.dialogflow.v2.EnvironmentHistory) other);
      } else {
        super.mergeFrom(other);
        return this;
      }
    }

    public Builder mergeFrom(com.google.cloud.dialogflow.v2.EnvironmentHistory other) {
      if (other == com.google.cloud.dialogflow.v2.EnvironmentHistory.getDefaultInstance())
        return this;
      if (!other.getParent().isEmpty()) {
        parent_ = other.parent_;
        bitField0_ |= 0x00000001;
        onChanged();
      }
      if (entriesBuilder_ == null) {
        if (!other.entries_.isEmpty()) {
          if (entries_.isEmpty()) {
            entries_ = other.entries_;
            bitField0_ = (bitField0_ & ~0x00000002);
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        if (!other.entries_.isEmpty()) {
          if (entriesBuilder_.isEmpty()) {
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                    : null;
          } else {
            entriesBuilder_.addAllMessages(other.entries_);
          }
        }
      }
      if (!other.getNextPageToken().isEmpty()) {
        nextPageToken_ = other.nextPageToken_;
        bitField0_ |= 0x00000004;
        onChanged();
      }
      this.mergeUnknownFields(other.getUnknownFields());
      onChanged();
      return this;
    }

    @java.lang.Override
    public final boolean isInitialized() {
      return true;
    }

    @java.lang.Override
    public Builder mergeFrom(
        com.google.protobuf.CodedInputStream input,
        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
        throws java.io.IOException {
      if (extensionRegistry == null) {
        throw new java.lang.NullPointerException();
      }
      try {
        boolean done = false;
        while (!done) {
          int tag = input.readTag();
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              done = true;
              break;
            case 10:
              {
                parent_ = input.readStringRequireUtf8();
                bitField0_ |= 0x00000001;
                break;
              } // case 10
            case 18:
              {
                com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry m =
                    input.readMessage(
                        com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry.parser(),
                        extensionRegistry);
                if (entriesBuilder_ == null) {
                  ensureEntriesIsMutable();
                  entries_.add(m);
                } else {
                  entriesBuilder_.addMessage(m);
                }
                break;
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                  done = true; // was an endgroup tag
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              } // default:
          } // switch (tag)
        } // while (!done)
      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
        throw e.unwrapIOException();
      } finally {
        onChanged();
      } // finally
      return this;
    }

    private int bitField0_;

    private java.lang.Object parent_ = "";
    /**
     *
     *
     * <pre>
     * Output only. The name of the environment this history is for.
     * Supported formats:
     * - `projects/&lt;Project ID&gt;/agent/environments/&lt;Environment ID&gt;`
     * - `projects/&lt;Project ID&gt;/locations/&lt;Location
     *    ID&gt;/agent/environments/&lt;Environment ID&gt;`
     * The environment ID for the default environment is `-`.
     * </pre>
     *
     * <code>string parent = 1 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
     *
     * @return The parent.
     */
    public java.lang.String getParent() {
      java.lang.Object ref = parent_;
      if (!(ref instanceof java.lang.String)) {
        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
        java.lang.String s = bs.toStringUtf8();
        parent_ = s;
        return s;
      } else {
        return (java.lang.String) ref;
      }
    }
    /**
     *
     *
     * <pre>
     * Output only. The name of the environment this history is for.
     * Supported formats:
     * - `projects/&lt;Project ID&gt;/agent/environments/&lt;Environment ID&gt;`
     * - `projects/&lt;Project ID&gt;/locations/&lt;Location
     *    ID&gt;/agent/environments/&lt;Environment ID&gt;`
     * The environment ID for the default environment is `-`.
     * </pre>
     *
     * <code>string parent = 1 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
     *
     * @return The bytes for parent.
     */
    public com.google.protobuf.ByteString getParentBytes() {
      java.lang.Object ref = parent_;
      if (ref instanceof String) {
        com.google.protobuf.ByteString b =
            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
        parent_ = b;
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
      }
    }
    /**
     *
     *
     * <pre>
     * Output only. The name of the environment this history is for.
     * Supported formats:
     * - `projects/&lt;Project ID&gt;/agent/environments/&lt;Environment ID&gt;`
     * - `projects/&lt;Project ID&gt;/locations/&lt;Location
     *    ID&gt;/agent/environments/&lt;Environment ID&gt;`
     * The environment ID for the default environment is `-`.
     * </pre>
     *
     * <code>string parent = 1 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
     *
     * @param value The parent to set.
     * @return This builder for chaining.
     */
    public Builder setParent(java.lang.String value) {
      if (value == null) {
        throw new NullPointerException();
      }
      parent_ = value;
      bitField0_ |= 0x00000001;
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * Output only. The name of the environment this history is for.
     * Supported formats:
     * - `projects/&lt;Project ID&gt;/agent/environments/&lt;Environment ID&gt;`
     * - `projects/&lt;Project ID&gt;/locations/&lt;Location
     *    ID&gt;/agent/environments/&lt;Environment ID&gt;`
     * The environment ID for the default environment is `-`.
     * </pre>
     *
     * <code>string parent = 1 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
     *
     * @return This builder for chaining.
     */
    public Builder clearParent() {
      parent_ = getDefaultInstance().getParent();
      bitField0_ = (bitField0_ & ~0x00000001);
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * Output only. The name of the environment this history is for.
     * Supported formats:
     * - `projects/&lt;Project ID&gt;/agent/environments/&lt;Environment ID&gt;`
     * - `projects/&lt;Project ID&gt;/locations/&lt;Location
     *    ID&gt;/agent/environments/&lt;Environment ID&gt;`
     * The environment ID for the default environment is `-`.
     * </pre>
     *
     * <code>string parent = 1 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
     *
     * @param value The bytes for parent to set.
     * @return This builder for chaining.
     */
    public Builder setParentBytes(com.google.protobuf.ByteString value) {
      if (value == null) {
        throw new NullPointerException();
      }
      checkByteStringIsUtf8(value);
      parent_ = value;
      bitField0_ |= 0x00000001;
      onChanged();
      return this;
    }

    private java.util.List<com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry> entries_ =
        java.util.Collections.emptyList();

    private void ensureEntriesIsMutable() {
      if (!((bitField0_ & 0x00000002) != 0)) {
        entries_ =
            new java.util.ArrayList<com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry>(
                entries_);
        bitField0_ |= 0x00000002;
      }
    }

    private com.google.protobuf.RepeatedFieldBuilderV3<
            com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry,
            com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry.Builder,
            com.google.cloud.dialogflow.v2.EnvironmentHistory.EntryOrBuilder>
        entriesBuilder_;

    /**
     *
     *
     * <pre>
     * Output only. The list of agent environments. There will be a maximum number
     * of items returned based on the page_size field in the request.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.dialogflow.v2.EnvironmentHistory.Entry entries = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public java.util.List<com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry>
        getEntriesList() {
      if (entriesBuilder_ == null) {
        return java.util.Collections.unmodifiableList(entries_);
      } else {
        return entriesBuilder_.getMessageList();
      }
    }
    /**
     *
     *
     * <pre>
     * Output only. The list of agent environments. There will be a maximum number
     * of items returned based on the page_size field in the request.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.dialogflow.v2.EnvironmentHistory.Entry entries = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public int getEntriesCount() {
      if (entriesBuilder_ == null) {
        return entries_.size();
      } else {
        return entriesBuilder_.getCount();
      }
    }
    /**
     *
     *
     * <pre>
     * Output only. The list of agent environments. There will be a maximum number
     * of items returned based on the page_size field in the request.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.dialogflow.v2.EnvironmentHistory.Entry entries = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry getEntries(int index) {
      if (entriesBuilder_ == null) {
        return entries_.get(index);
      } else {
        return entriesBuilder_.getMessage(index);
      }
    }
    /**
     *
     *
     * <pre>
     * Output only. The list of agent environments. There will be a maximum number
     * of items returned based on the page_size field in the request.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.dialogflow.v2.EnvironmentHistory.Entry entries = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public Builder setEntries(
        int index, com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry value) {
      if (entriesBuilder_ == null) {
        if (value == null) {
          throw new NullPointerException();
        }
        ensureEntriesIsMutable();
        entries_.set(index, value);
        onChanged();
      } else {
        entriesBuilder_.setMessage(index, value);
      }
      return this;
    }
    /**
     *
     *
     * <pre>
     * Output only. The list of agent environments. There will be a maximum number
     * of items returned based on the page_size field in the request.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.dialogflow.v2.EnvironmentHistory.Entry entries = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public Builder setEntries(
        int index,
        com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry.Builder builderForValue) {
      if (entriesBuilder_ == null) {
        ensureEntriesIsMutable();
        entries_.set(index, builderForValue.build());
        onChanged();
      } else {
        entriesBuilder_.setMessage(index, builderForValue.build());
      }
      return this;
    }
    /**
     *
     *
     * <pre>
     * Output only. The list of agent environments. There will be a maximum number
     * of items returned based on the page_size field in the request.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.dialogflow.v2.EnvironmentHistory.Entry entries = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public Builder addEntries(com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry value) {
      if (entriesBuilder_ == null) {
        if (value == null) {
          throw new NullPointerException();
        }
        ensureEntriesIsMutable();
        entries_.add(value);
        onChanged();
      } else {
        entriesBuilder_.addMessage(value);
      }
      return this;
    }
    /**
     *
     *
     * <pre>
     * Output only. The list of agent environments. There will be a maximum number
     * of items returned based on the page_size field in the request.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.dialogflow.v2.EnvironmentHistory.Entry entries = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public Builder addEntries(
        int index, com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry value) {
      if (entriesBuilder_ == null) {
        if (value == null) {
          throw new NullPointerException();
        }
        ensureEntriesIsMutable();
        entries_.add(index, value);
        onChanged();
      } else {
        entriesBuilder_.addMessage(index, value);
      }
      return this;
    }
    /**
     *
     *
     * <pre>
     * Output only. The list of agent environments. There will be a maximum number
     * of items returned based on the page_size field in the request.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.dialogflow.v2.EnvironmentHistory.Entry entries = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public Builder addEntries(
        com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry.Builder builderForValue) {
      if (entriesBuilder_ == null) {
        ensureEntriesIsMutable();
        entries_.add(builderForValue.build());
        onChanged();
      } else {
        entriesBuilder_.addMessage(builderForValue.build());
      }
      return this;
    }
    /**
     *
     *
     * <pre>
     * Output only. The list of agent environments. There will be a maximum number
     * of items returned based on the page_size field in the request.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.dialogflow.v2.EnvironmentHistory.Entry entries = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public Builder addEntries(
        int index,
        com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry.Builder builderForValue) {
      if (entriesBuilder_ == null) {
        ensureEntriesIsMutable();
        entries_.add(index, builderForValue.build());
        onChanged();
      } else {
        entriesBuilder_.addMessage(index, builderForValue.build());
      }
      return this;
    }
    /**
     *
     *
     * <pre>
     * Output only. The list of agent environments. There will be a maximum number
     * of items returned based on the page_size field in the request.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.dialogflow.v2.EnvironmentHistory.Entry entries = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public Builder addAllEntries(
        java.lang.Iterable<? extends com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry>
            values) {
      if (entriesBuilder_ == null) {
        ensureEntriesIsMutable();
        com.google.protobuf.AbstractMessageLite.Builder.addAll(values, entries_);
        onChanged();
      } else {
        entriesBuilder_.addAllMessages(values);
      }
      return this;
    }
    /**
     *
     *
     * <pre>
     * Output only. The list of agent environments. There will be a maximum number
     * of items returned based on the page_size field in the request.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.dialogflow.v2.EnvironmentHistory.Entry entries = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public Builder clearEntries() {
      if (entriesBuilder_ == null) {
        entries_ = java.util.Collections.emptyList();
        bitField0_ = (bitField0_ & ~0x00000002);
        onChanged();
      } else {
        entriesBuilder_.clear();
      }
      return this;
    }
    /**
     *
     *
     * <pre>
     * Output only. The list of agent environments. There will be a maximum number
     * of items returned based on the page_size field in the request.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.dialogflow.v2.EnvironmentHistory.Entry entries = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public Builder removeEntries(int index) {
      if (entriesBuilder_ == null) {
        ensureEntriesIsMutable();
        entries_.remove(index);
        onChanged();
      } else {
        entriesBuilder_.remove(index);
      }
      return this;
    }
    /**
     *
     *
     * <pre>
     * Output only. The list of agent environments. There will be a maximum number
     * of items returned based on the page_size field in the request.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.dialogflow.v2.EnvironmentHistory.Entry entries = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry.Builder getEntriesBuilder(
        int index) {
      return getEntriesFieldBuilder().getBuilder(index);
    }
    /**
     *
     *
     * <pre>
     * Output only. The list of agent environments. There will be a maximum number
     * of items returned based on the page_size field in the request.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.dialogflow.v2.EnvironmentHistory.Entry entries = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public com.google.cloud.dialogflow.v2.EnvironmentHistory.EntryOrBuilder getEntriesOrBuilder(
        int index) {
      if (entriesBuilder_ == null) {
        return entries_.get(index);
      } else {
        return entriesBuilder_.getMessageOrBuilder(index);
      }
    }
    /**
     *
     *
     * <pre>
     * Output only. The list of agent environments. There will be a maximum number
     * of items returned based on the page_size field in the request.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.dialogflow.v2.EnvironmentHistory.Entry entries = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public java.util.List<
            ? extends com.google.cloud.dialogflow.v2.EnvironmentHistory.EntryOrBuilder>
        getEntriesOrBuilderList() {
      if (entriesBuilder_ != null) {
        return entriesBuilder_.getMessageOrBuilderList();
      } else {
        return java.util.Collections.unmodifiableList(entries_);
      }
    }
    /**
     *
     *
     * <pre>
     * Output only. The list of agent environments. There will be a maximum number
     * of items returned based on the page_size field in the request.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.dialogflow.v2.EnvironmentHistory.Entry entries = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry.Builder addEntriesBuilder() {
      return getEntriesFieldBuilder()
          .addBuilder(com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry.getDefaultInstance());
    }
    /**
     *
     *
     * <pre>
     * Output only. The list of agent environments. There will be a maximum number
     * of items returned based on the page_size field in the request.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.dialogflow.v2.EnvironmentHistory.Entry entries = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry.Builder addEntriesBuilder(
        int index) {
      return getEntriesFieldBuilder()
          .addBuilder(
              index, com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry.getDefaultInstance());
    }
    /**
     *
     *
     * <pre>
     * Output only. The list of agent environments. There will be a maximum number
     * of items returned based on the page_size field in the request.
     * </pre>
     *
     * <code>
     * repeated .google.cloud.dialogflow.v2.EnvironmentHistory.Entry entries = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];
     * </code>
     */
    public java.util.List<com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry.Builder>
        getEntriesBuilderList() {
      return getEntriesFieldBuilder().getBuilderList();
    }

    private com.google.protobuf.RepeatedFieldBuilderV3<
            com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry,
            com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry.Builder,
            com.google.cloud.dialogflow.v2.EnvironmentHistory.EntryOrBuilder>
        getEntriesFieldBuilder() {
      if (entriesBuilder_ == null) {
        entriesBuilder_ =
            new com.google.protobuf.RepeatedFieldBuilderV3<
                com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry,
                com.google.cloud.dialogflow.v2.EnvironmentHistory.Entry.Builder,
                com.google.cloud.dialogflow.v2.EnvironmentHistory.EntryOrBuilder>(
                entries_, ((bitField0_ & 0x00000002) != 0), getParentForChildren(), isClean());
        entries_ = null;
      }
      return entriesBuilder_;
    }

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    /**
     *
     *
     * <pre>
     * Output only. Token to retrieve the next page of results, or empty if there
     * are no more results in the list.
     * </pre>
     *
     * <code>string next_page_token = 3 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
     *
     * @return The nextPageToken.
     */
    public java.lang.String getNextPageToken() {
      java.lang.Object ref = nextPageToken_;
      if (!(ref instanceof java.lang.String)) {
        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
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    /**
     *
     *
     * <pre>
     * Output only. Token to retrieve the next page of results, or empty if there
     * are no more results in the list.
     * </pre>
     *
     * <code>string next_page_token = 3 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
     *
     * @return The bytes for nextPageToken.
     */
    public com.google.protobuf.ByteString getNextPageTokenBytes() {
      java.lang.Object ref = nextPageToken_;
      if (ref instanceof String) {
        com.google.protobuf.ByteString b =
            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
        nextPageToken_ = b;
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
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    /**
     *
     *
     * <pre>
     * Output only. Token to retrieve the next page of results, or empty if there
     * are no more results in the list.
     * </pre>
     *
     * <code>string next_page_token = 3 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
     *
     * @param value The nextPageToken to set.
     * @return This builder for chaining.
     */
    public Builder setNextPageToken(java.lang.String value) {
      if (value == null) {
        throw new NullPointerException();
      }
      nextPageToken_ = value;
      bitField0_ |= 0x00000004;
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * Output only. Token to retrieve the next page of results, or empty if there
     * are no more results in the list.
     * </pre>
     *
     * <code>string next_page_token = 3 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
     *
     * @return This builder for chaining.
     */
    public Builder clearNextPageToken() {
      nextPageToken_ = getDefaultInstance().getNextPageToken();
      bitField0_ = (bitField0_ & ~0x00000004);
      onChanged();
      return this;
    }
    /**
     *
     *
     * <pre>
     * Output only. Token to retrieve the next page of results, or empty if there
     * are no more results in the list.
     * </pre>
     *
     * <code>string next_page_token = 3 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>
     *
     * @param value The bytes for nextPageToken to set.
     * @return This builder for chaining.
     */
    public Builder setNextPageTokenBytes(com.google.protobuf.ByteString value) {
      if (value == null) {
        throw new NullPointerException();
      }
      checkByteStringIsUtf8(value);
      nextPageToken_ = value;
      bitField0_ |= 0x00000004;
      onChanged();
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    @java.lang.Override
    public final Builder setUnknownFields(final com.google.protobuf.UnknownFieldSet unknownFields) {
      return super.setUnknownFields(unknownFields);
    }

    @java.lang.Override
    public final Builder mergeUnknownFields(
        final com.google.protobuf.UnknownFieldSet unknownFields) {
      return super.mergeUnknownFields(unknownFields);
    }

    // @@protoc_insertion_point(builder_scope:google.cloud.dialogflow.v2.EnvironmentHistory)
  }

  // @@protoc_insertion_point(class_scope:google.cloud.dialogflow.v2.EnvironmentHistory)
  private static final com.google.cloud.dialogflow.v2.EnvironmentHistory DEFAULT_INSTANCE;

  static {
    DEFAULT_INSTANCE = new com.google.cloud.dialogflow.v2.EnvironmentHistory();
  }

  public static com.google.cloud.dialogflow.v2.EnvironmentHistory getDefaultInstance() {
    return DEFAULT_INSTANCE;
  }

  private static final com.google.protobuf.Parser<EnvironmentHistory> PARSER =
      new com.google.protobuf.AbstractParser<EnvironmentHistory>() {
        @java.lang.Override
        public EnvironmentHistory parsePartialFrom(
            com.google.protobuf.CodedInputStream input,
            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
            throws com.google.protobuf.InvalidProtocolBufferException {
          Builder builder = newBuilder();
          try {
            builder.mergeFrom(input, extensionRegistry);
          } catch (com.google.protobuf.InvalidProtocolBufferException e) {
            throw e.setUnfinishedMessage(builder.buildPartial());
          } catch (com.google.protobuf.UninitializedMessageException e) {
            throw e.asInvalidProtocolBufferException().setUnfinishedMessage(builder.buildPartial());
          } catch (java.io.IOException e) {
            throw new com.google.protobuf.InvalidProtocolBufferException(e)
                .setUnfinishedMessage(builder.buildPartial());
          }
          return builder.buildPartial();
        }
      };

  public static com.google.protobuf.Parser<EnvironmentHistory> parser() {
    return PARSER;
  }

  @java.lang.Override
  public com.google.protobuf.Parser<EnvironmentHistory> getParserForType() {
    return PARSER;
  }

  @java.lang.Override
  public com.google.cloud.dialogflow.v2.EnvironmentHistory getDefaultInstanceForType() {
    return DEFAULT_INSTANCE;
  }
}
