code: def getValueT() -> BaseCppType:
      global _valueT
      if not _valueT:
          raise NotImplementedError(
              "The value type needs to be set with setValueT() in run_gen_lazy_tensor()"
          )
  
      return _valueT
  
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 1 for calling a global function with example usage: getValueT() and returns: _valueT