docstr: Get our DeltaGenerator.
code: def dg(self) -> "DeltaGenerator":
      """Get our DeltaGenerator."""
      return cast("DeltaGenerator", self)
  
file_path: streamlit/lib/streamlit/elements/progress.py
imports: from typing import TYPE_CHECKING, Optional, Union, cast
  from typing_extensions import TypeAlias
  from streamlit.errors import StreamlitAPIException
  from streamlit.proto.Progress_pb2 import Progress
  from streamlit.string_util import clean_text
label_desc: Use image node_id 2 for calling the ProgressMixin obj's underlying member method code with example usage: obj.dg() and returns: cast