session.read(flowFile, in -> hashValueHolder.set(HashService.hashValueStreaming(algorithm, in)));
session.read(flowFile, in -> hashValueHolder.set(HashService.hashValueStreaming(algorithm, in)));
session.read(flowFile, in -> hashValueHolder.set(HashService.hashValueStreaming(algorithm, in)));
session.read(flowFile, in -> hashValueHolder.set(HashService.hashValueStreaming(algorithm, in)));