code: def test_check_malformed_graph_source_no_errors(self) -> None:
      renderer = bmr.GraphRenderer()
  
      check = renderer._check_malformed_graph_source()
      assert check == []
  
file_path: bokeh/tests/unit/bokeh/models/test_graph_renderer.py
imports: from __future__ import annotations
  import pytest
  from bokeh.models import Circle, ColumnDataSource, MultiLine, StaticLayoutProvider
  import bokeh.models.renderers
label_desc: Use image node_id 2 for calling the TestGraphRenderer obj's underlying member method code with example usage: obj.test_check_malformed_graph_source_no_errors() without return types