public Builder clearCreateTime() {
      bitField0_ = (bitField0_ & ~0x00000002);
      createTime_ = null;
      if (createTimeBuilder_ != null) {
        createTimeBuilder_.dispose();
        createTimeBuilder_ = null;
      }
      onChanged();
      return this;
    }
<pre>
The creation time of the operation.
</pre>

<code>.google.protobuf.Timestamp create_time = 2;</code>
java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/CreateDatasetMetadata.java