class_docstr: Messenger to force the value of observed nodes to be sampled from their
  distribution, ignoring observations.
class_docstr_tok: ["Messenger","to","force","the","value","of","observed","nodes","to","be","sampled","from","their","distribution",",","ignoring","observations","."]
code: def __init__(self) -> None:
      super().__init__()
  
imports: from typing import TYPE_CHECKING
  from pyro.poutine.messenger import Messenger
label_desc: Use image node_id 1 to create a new UnconditionMessenger object from inherited base classes: Messenger with example: obj = UnconditionMessenger()