@java.lang.Override
      public Builder clear() {
        super.clear();
        bitField0_ = 0;
        if (gcsDataSourceBuilder_ != null) {
          gcsDataSourceBuilder_.clear();
        }
        if (gcsDataSinkBuilder_ != null) {
          gcsDataSinkBuilder_.clear();
        }
        objectConditions_ = null;
        if (objectConditionsBuilder_ != null) {
          objectConditionsBuilder_.dispose();
          objectConditionsBuilder_ = null;
        }
        transferOptions_ = null;
        if (transferOptionsBuilder_ != null) {
          transferOptionsBuilder_.dispose();
          transferOptionsBuilder_ = null;
        }
        dataSourceCase_ = 0;
        dataSource_ = null;
        dataSinkCase_ = 0;
        dataSink_ = null;
        return this;
      }
<pre>
Specifies the configuration for a cross-bucket replication job. Cross-bucket
replication copies new or updated objects from a source Cloud Storage bucket
to a destination Cloud Storage bucket. Existing objects in the source bucket
are not copied by a new cross-bucket replication job.
</pre>

Protobuf type {@code google.storagetransfer.v1.ReplicationSpec}
java-storage-transfer/proto-google-cloud-storage-transfer-v1/src/main/java/com/google/storagetransfer/v1/proto/TransferTypes.java