public com.google.protobuf.Timestamp.Builder getCreateTimeBuilder() {
      bitField0_ |= 0x00000001;
      onChanged();
      return getCreateTimeFieldBuilder().getBuilder();
    }
<pre>
The time the operation was created.
</pre>

<code>.google.protobuf.Timestamp create_time = 1;</code>
java-workflows/proto-google-cloud-workflows-v1/src/main/java/com/google/cloud/workflows/v1/OperationMetadata.java