code: def from_json_and_lambdas(cls, file: str, lambdas):
          
          with open(file, "r") as f:
              data = json.load(f)
  
          return cls.from_dict(data, lambdas)
docs: Builds a GrFN from a JSON object.
  
          Args:
              cls: The class variable for object creation.
              file: Filename of a GrFN JSON file.
  
          Returns:
              type: A GroundedFunctionNetwork object.