code: def test_echo(name):
      t = BoostBuild.Tester(["-ffile.jam"], pass_toolset=0)
  
      t.write(
          "file.jam",
          """\
  %s ;
  UPDATE ;
  """
          % name,
      )
      t.run_build_system(stdout="\n")
  
      t.write(
          "file.jam",
          """\
  %s a message ;
  UPDATE ;
  """
          % name,
      )
      t.run_build_system(stdout="a message\n")
  
      t.cleanup()
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_echo(name) without return types