code: def _pyro_param(self, msg):
      super()._pyro_param(msg)
      msg["scale"] = msg["scale"] * self._scale
  
imports: from collections import OrderedDict
  from numbers import Number
  import funsor
  from pyro.contrib.funsor.handlers.named_messenger import DimRequest, DimType, GlobalNamedMessenger, NamedMessenger
  from pyro.contrib.funsor.handlers.primitives import to_data, to_funsor
  from pyro.distributions.util import copy_docs_from
  from pyro.poutine.broadcast_messenger import BroadcastMessenger
  from pyro.poutine.indep_messenger import CondIndepStackFrame
  from pyro.poutine.messenger import Messenger
  from pyro.poutine.runtime import effectful
  from pyro.poutine.subsample_messenger import SubsampleMessenger
  from pyro.util import ignore_jit_warnings
label_desc: Use image node_id 3 for calling the SubsampleMessenger obj's underlying member method code with example usage: obj._pyro_param(msg) without return types