code: def guide_empty_multi(weeks_data, days_data, history, vectorized):
      pass
  
imports: import pytest
  import torch
  from pyroapi import pyro_backend
  from torch.distributions import constraints
  from pyro.ops.indexing import Vindex
label_desc: Use image node_id 15 for calling a global function with example usage: guide_empty_multi(weeks_data, days_data, history, vectorized) without return types