unionml.dataset.ReaderReturnTypeSource# class unionml.dataset.ReaderReturnTypeSource(value)# Indicates which Dataset component the materialized dataset type is derived from. Attributes READER The materialized dataset type comes from the return annotation of reader() LOADER The materialized dataset type comes from the return annotation of loader() LOADER = 'loader'# The materialized dataset type comes from the return annotation of loader() READER = 'reader'# The materialized dataset type comes from the return annotation of reader()