public com.google.storagetransfer.v1.proto.TransferTypes.ReplicationSpec.Builder
          getReplicationSpecBuilder() {
        bitField0_ |= 0x00000020;
        onChanged();
        return getReplicationSpecFieldBuilder().getBuilder();
      }
<pre>
Replication specification.
</pre>

<code>.google.storagetransfer.v1.ReplicationSpec replication_spec = 17;</code>
java-storage-transfer/proto-google-cloud-storage-transfer-v1/src/main/java/com/google/storagetransfer/v1/proto/TransferTypes.java