docstr: Get our DeltaGenerator.
code: def dg(self) -> "DeltaGenerator":
      """Get our DeltaGenerator."""
      return cast("DeltaGenerator", self)
  
file_path: streamlit/lib/streamlit/elements/bokeh_chart.py
imports: import hashlib
  import json
  from typing import TYPE_CHECKING, cast
  from typing_extensions import Final
  from streamlit.errors import StreamlitAPIException
  from streamlit.proto.BokehChart_pb2 import BokehChart
  from streamlit.runtime.metrics_util import gather_metrics
  from streamlit.util import HASHLIB_KWARGS
label_desc: Use image node_id 2 for calling the BokehMixin obj's underlying member method code with example usage: obj.dg() and returns: cast