code: def vectorized(self) -> bool:
      return self.dim is not None
  
imports: import numbers
  from typing import Iterator, NamedTuple, Optional, Tuple
  import torch
  from typing_extensions import Self
  from pyro.poutine.messenger import Messenger
  from pyro.poutine.runtime import _DIM_ALLOCATOR, Message
  from pyro.util import ignore_jit_warnings
label_desc: Use image node_id 1 for calling the CondIndepStackFrame obj's underlying member method code with example usage: obj.vectorized() and returns: unknown