class_docstr: Test the metadata in the serialized delta message for the different
  dimension specifier options.
class_docstr_tok: ["Test","the","metadata","in","the","serialized","delta","message","for","the","different","dimension","specifier","options","."]
docstr: Returns the metadata for the most recent element in the
  DeltaGenerator queue
docstr_tok: ["Returns","the","metadata","for","the","most","recent","element","in","the","DeltaGenerator","queue"]
code: def _get_metadata(self):
      """Returns the metadata for the most recent element in the
      DeltaGenerator queue
      """
      return self.forward_msg_queue._queue[-1].metadata
  
file_path: streamlit/lib/tests/streamlit/elements/arrow_dataframe_dimensions_test.py
imports: import pandas
  import streamlit
  from tests.delta_generator_test_case import DeltaGeneratorTestCase
label_desc: Use image node_id 6 for calling the ArrowDataFrameDimensionsTest obj's underlying member method code with example usage: obj._get_metadata() and returns: self