code: def estimate_size(self, ixreader):
      return self.child.estimate_size(ixreader)
  
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 11 for calling the WrappingQuery obj's underlying member method code with example usage: obj.estimate_size(ixreader) and returns: self