code: def __call__(self) -> int:
      return self.a * self.b
  
imports: import abc
  import os
  import unittest
  from reagent.core.configuration import make_config_class, resolve_defaults
  from reagent.core.dataclasses import dataclass, field
  from reagent.core.registry_meta import RegistryMeta
  from reagent.core.tagged_union import TaggedUnion
label_desc: Use image node_id 2 for calling the A obj's underlying member method code with example usage: obj.__call__() and returns: unknown