public Builder mergeFrom(com.google.cloud.storagebatchoperations.v1.OperationMetadata other) {
      if (other
          == com.google.cloud.storagebatchoperations.v1.OperationMetadata.getDefaultInstance())
        return this;
      if (!other.getOperation().isEmpty()) {
        operation_ = other.operation_;
        bitField0_ |= 0x00000001;
        onChanged();
      }
      if (other.hasCreateTime()) {
        mergeCreateTime(other.getCreateTime());
      }
      if (other.hasEndTime()) {
        mergeEndTime(other.getEndTime());
      }
      if (other.getRequestedCancellation() != false) {
        setRequestedCancellation(other.getRequestedCancellation());
      }
      if (!other.getApiVersion().isEmpty()) {
        apiVersion_ = other.apiVersion_;
        bitField0_ |= 0x00000010;
        onChanged();
      }
      if (other.hasJob()) {
        mergeJob(other.getJob());
      }
      this.mergeUnknownFields(other.getUnknownFields());
      onChanged();
      return this;
    }
<pre>
Represents the metadata of the long-running operation.
</pre>

Protobuf type {@code google.cloud.storagebatchoperations.v1.OperationMetadata}
java-storagebatchoperations/proto-google-cloud-storagebatchoperations-v1/src/main/java/com/google/cloud/storagebatchoperations/v1/OperationMetadata.java