code: def intersect_with_self_loops(
      base_graph: "k2.Fsa", aux_graph: "k2.Fsa"
  ) -> "k2.Fsa":
      """Intersection helper function."""
      assert hasattr(base_graph, "aux_labels")
      assert not hasattr(aux_graph, "aux_labels")
      aux_graph_with_self_loops = k2.arc_sort(
          k2.add_epsilon_self_loops(aux_graph)
      ).to(base_graph.device)
      result = k2.intersect(
          k2.arc_sort(base_graph),
          aux_graph_with_self_loops,
          treat_epsilons_specially=False,
      )
      setattr(result, "phones", result.labels)
      return result
  
imports: import os
  import struct
  from pickle import UnpicklingError
  from typing import List, Optional, Tuple, Union
  import torch
  from nemo.core.utils.k2_guard import k2
  from nemo.utils import logging
label_desc: Use image node_id 7 for calling a global function with example usage: intersect_with_self_loops(base_graph, aux_graph) and returns: result