code: def test_plot_add_layout_adds_label_to_plot_renderers() -> None:
      plot = figure()
      label = Label()
      plot.add_layout(label)
      assert label in plot.center
  
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 2 for calling a global function with example usage: test_plot_add_layout_adds_label_to_plot_renderers() without return types