code: def test_copyright_header():
      copyright_header = "".join(
          [
              f"# Copyright (C) {2021}-{datetime.now().year}, Mindee.\n\n",
              "# This program is licensed under the Apache License 2.0.\n",
              "# See LICENSE or go to <https://opensource.org/licenses/Apache-2.0> for full license details.\n",
          ]
      )
      excluded_files = ["__init__.py", "version.py"]
      invalid_files = []
      locations = [
          ".github",
          "api/app",
          "demo",
          "docs",
          "doctr",
          "references",
          "scripts",
      ]
  
      for location in locations:
          for source_path in (
              Path(__file__)
              .parent.parent.parent.joinpath(location)
              .rglob("*.py")
          ):
              if source_path.name not in excluded_files:
                  source_path_content = source_path.read_text()
                  if copyright_header not in source_path_content:
                      invalid_files.append(source_path)
      assert (
          len(invalid_files) == 0
      ), f"Invalid copyright header in the following files: {invalid_files}"
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_copyright_header() without return types