public Builder clearS3Metadata() {
        if (s3MetadataBuilder_ == null) {
          if (dataProviderCase_ == 4) {
            dataProviderCase_ = 0;
            dataProvider_ = null;
            onChanged();
          }
        } else {
          if (dataProviderCase_ == 4) {
            dataProviderCase_ = 0;
            dataProvider_ = null;
          }
          s3MetadataBuilder_.clear();
        }
        return this;
      }
<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