code: def test_missing_renderers(self) -> None:
      p = figure()
      p.renderers = []
      with mock.patch("bokeh.core.validation.check.log") as mock_logger:
          issues = check_integrity([p])
          process_validation_issues(issues)
      assert mock_logger.warning.call_count == 1
      assert mock_logger.warning.call_args[0][0].startswith(
          "W-1000 (MISSING_RENDERERS): Plot has no renderers"
      )
  
imports: from __future__ import annotations
  import pytest
  from math import isnan
  from unittest import mock
  from unittest.mock import MagicMock, patch
  import xyzservices.providers
  from bokeh.core.validation import check_integrity, process_validation_issues
  from bokeh.models import CategoricalScale, CustomJS, DataRange1d, FactorRange, GlyphRenderer, Label, LinearAxis, LinearScale, LogScale, PanTool, Plot, Range1d, ResetTool, Title, WMTSTileSource, ZoomInTool, ZoomOutTool
  from bokeh.plotting import figure
  import bokeh.models.plots
label_desc: Use image node_id 1 for calling the TestPlotValidation obj's underlying member method code with example usage: obj.test_missing_renderers() without return types