@java.lang.Override
    public com.google.storagetransfer.v1.proto.TransferTypes.S3CompatibleMetadata getS3Metadata() {
      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>

@return The s3Metadata.
java-storage-transfer/proto-google-cloud-storage-transfer-v1/src/main/java/com/google/storagetransfer/v1/proto/TransferTypes.java