class_docstr: Basic rectangle representation using kiwi solver variables
class_docstr_tok: ["Basic","rectangle","representation","using","kiwi","solver","variables"]
code: def add_child(self, child):
      self.children += [child]
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import itertools
  import kiwisolver
  import logging
  import numpy
  import warnings
  import matplotlib
label_desc: Use image node_id 3 for calling the LayoutBox obj's underlying member method code with example usage: obj.add_child(child) without return types