public com.google.protobuf.TimestampOrBuilder getEndTimeOrBuilder() {
      if (endTimeBuilder_ != null) {
        return endTimeBuilder_.getMessageOrBuilder();
      } else {
        return endTime_ == null ? com.google.protobuf.Timestamp.getDefaultInstance() : endTime_;
      }
    }
<pre>
The time the operation finished running.
</pre>

<code>.google.protobuf.Timestamp end_time = 2;</code>
java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/OperationMetadata.java