code: def plate(name, size, dim=None):
      if dim is None:
          raise NotImplementedError("minipyro.plate requires a dim arg")
      return PlateMessenger(fn=None, size=size, dim=dim)
  
imports: import random
  import warnings
  import weakref
  from collections import OrderedDict
  import numpy
  import torch
  from pyro.distributions import validation_enabled
label_desc: Use image node_id 5 for calling a global function with example usage: plate(name, size, dim) and returns: PlateMessenger