code: def test_escape_silent(escape, escape_silent):
      assert escape_silent(None) == Markup()
      assert escape(None) == Markup(None)
      assert escape_silent("<foo>") == Markup("&lt;foo&gt;")
  
imports: import pytest
  from markupsafe import Markup
label_desc: Use image node_id 16 for calling a global function with example usage: test_escape_silent(escape, escape_silent) without return types