code: def test_customDocs():
      assert "CAUTION" in html.Script.__doc__[:100]
      assert "OBSOLETE" in html.Blink.__doc__[:100]
      assert "DEPRECATED" in html.Marquee.__doc__[:100]
  
imports: import pytest
  import dash
  from dash import html
label_desc: Use image node_id 4 for calling a global function with example usage: test_customDocs() without return types