@java.lang.Override
      public com.google.storagetransfer.v1.proto.TransferTypes.S3CompatibleMetadataOrBuilder
          getS3MetadataOrBuilder() {
        if ((dataProviderCase_ == 4) && (s3MetadataBuilder_ != null)) {
          return s3MetadataBuilder_.getMessageOrBuilder();
        } else {
          if (dataProviderCase_ == 4) {
            return (com.google.storagetransfer.v1.proto.TransferTypes.S3CompatibleMetadata)
                dataProvider_;
          }
          return com.google.storagetransfer.v1.proto.TransferTypes.S3CompatibleMetadata
              .getDefaultInstance();
        }
      }
<pre>
A S3 compatible metadata.
</pre>

<code>.google.storagetransfer.v1.S3CompatibleMetadata s3_metadata = 4;</code>
java-storage-transfer/proto-google-cloud-storage-transfer-v1/src/main/java/com/google/storagetransfer/v1/proto/TransferTypes.java