code: def test_processing_utils_backwards_compatibility():
      pdf_component = PDF()
      cached_pdf_file = pdf_component.as_example(
          "test/test_files/sample_file.pdf"
      )
      assert (
          cached_pdf_file
          and Path(cached_pdf_file).exists()
          and Path(cached_pdf_file).name == "sample_file.pdf"
      )
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_processing_utils_backwards_compatibility() without return types