code: def __getitem__(cls, value_type):
      return Value(value_type)
  
imports: import inspect
  import typing
  import warnings
  from collections import OrderedDict
  from functools import singledispatch
  import makefun
  from funsor.instrument import debug_logged
  from funsor.terms import Funsor, FunsorMeta, Variable, eager, to_funsor
  from funsor.util import as_callable
label_desc: Use image node_id 1 for calling the ValueMeta obj's underlying member method code with example usage: obj.__getitem__(cls, value_type) and returns: Value