code: def add_field(self, name, field, schema):
      _apply_validators_modifications(schema, field)
      self.properties[name] = schema
      if field.required:
          self.required.append(name)
  
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 2 for calling the ObjectBuilder obj's underlying member method code with example usage: obj.add_field(name, field, schema) without return types