code: def _output_elements(self, elements):
      for item in elements:
          yield self._output_data_converter.to_external(item)
  
file_path: flink/flink-python/pyflink/fn_execution/embedded/operations.py
imports: from pyflink.fn_execution.datastream.embedded.operations import extract_process_function
  from pyflink.fn_execution.embedded.converters import DataConverter
label_desc: Use image node_id 6 for calling the FunctionOperation obj's underlying member method code with example usage: obj._output_elements(elements) without return types