code: def __hash__(self):
      return hash(self.__class__.__name__) ^ hash(self.child)
  
imports: from __future__ import division
  from array import array
  from whoosh import matching
  from whoosh.compat import text_type, u
  from whoosh.query import qcore
label_desc: Use image node_id 3 for calling the WrappingQuery obj's underlying member method code with example usage: obj.__hash__() and returns: unknown