code: def setup_custom_environment(custom_module_path):
      
      module = import_file("maskrcnn_benchmark.utils.env.custom_module", custom_module_path)
      assert hasattr(module, "setup_environment") and callable(
          module.setup_environment
      ), (
          "Custom environment module defined in {} does not have the "
          "required callable attribute 'setup_environment'."
      ).format(
          custom_module_path
      )
      module.setup_environment()
docs: Load custom environment setup from a Python source file and run the setup
      function.