code: def _make_mapped_queue(self, h):
      q = MappedQueue()
      q.heap = h
      q.position = {elt: pos for pos, elt in enumerate(h)}
      return q
  
imports: import pytest
  from networkx.utils.mapped_queue import MappedQueue, _HeapElement
label_desc: Use image node_id 3 for calling the TestMappedQueue obj's underlying member method code with example usage: obj._make_mapped_queue(h) and returns: q