code: def lazy_type(self) -> CType:
      assert (
          self.lazy_type_ is not None
      ), f"Attempted to access lazy_type for invalid argument {self.name}"
      return self.lazy_type_
  
imports: from typing import Any, Dict, List, Optional, Tuple, Union
  from torchgen.api.types import BaseCppType, BaseCType, boolT, CType, deviceT, doubleT, generatorT, layoutT, ListCType, longT, memoryFormatT, NamedCType, OptionalCType, scalarT, scalarTypeT, stringT, SymIntT, VectorCType
  from torchgen.model import Argument, BaseTy, BaseType, FunctionSchema, ListType, OperatorName, OptionalType, Return, TensorOptionsArguments, Type
label_desc: Use image node_id 2 for calling the LazyArgument obj's underlying member method code with example usage: obj.lazy_type() and returns: self