code: def add_definition(self, builder):
      if self.parent:
          return self.parent.add_definition(builder)
  
      self.definitions.add(builder)
  
imports: from __future__ import absolute_import
  from collections import defaultdict
  import six
  from .None import errors
  from .fields import NotSet
label_desc: Use image node_id 7 for calling the Builder obj's underlying member method code with example usage: obj.add_definition(builder) and returns: self