code: def aggregation(self):
      return {"acc": mean}
  
imports: import inspect
  import lm_eval.datasets.asdiv.asdiv
  from lm_eval.base import rf, Task
  from lm_eval.metrics import mean
label_desc: Use image node_id 14 for calling the Asdiv obj's underlying member method code with example usage: obj.aggregation() and returns: dict