code: def run(self, first_value: int, second_value: int):
      """
      :param first_value: name of the connection carrying the value to subtract from.
      :param second_value: name of the connection carrying the value to subtract.
      """
      return {"difference": first_value - second_value}
  
label_desc: Use image node_id 1 for calling the Subtract obj's underlying member method code with example usage: obj.run(first_value, second_value) and returns: dict