code: def __call__(self, params):
      func = params.func
      opset_version = params.opset_version
      input_names = params.input_names
      output_names = params.output_names
      context = params.context
      return self.converter(
          func, opset_version, input_names, output_names, context
      )
  
label_desc: Use image node_id 2 for calling the FunctionConverter obj's underlying member method code with example usage: obj.__call__(params) and returns: self