How to use

writeTo

method

in

org.apache.beam.vendor.grpc.v1_13_1.com.google.protobuf.ByteString

@Override
public void onNext(ArtifactApi.PutArtifactRequest value) {
 try {
  if (value.getData() == null) {
   StatusRuntimeException e =
     Status.INVALID_ARGUMENT
       .withDescription(
         String.format(
           "Expected all chunks in the current stream state to contain data, got %s",
           value.getContentCase()))
       .asRuntimeException();
   throw e;
  }
  value.getData().getData().writeTo(target);
 } catch (Exception e) {
  cleanedUp(e);
 }
}