code: def g():
      return "D.g"
  
imports: from zipline.testing.fixtures import ZiplineTestCase
  from zipline.testing.predicates import assert_equal, assert_is, assert_is_instance, assert_is_subclass, assert_true
  from zipline.utils.metautils import compose_types, with_metaclasses
label_desc: Use image node_id 2 for calling the D obj's underlying member method code with example usage: obj.g() and returns: str