code: def __getattr__(self, item):
      return getattr(self._optimizer, item)
  
file_path: insightface/recognition/partial_fc/mxnet/optimizer.py
imports: import horovod.mxnet
  import mxnet
  from mxnet import nd
label_desc: Use image node_id 2 for calling the DistributedOptimizer obj's underlying member method code with example usage: obj.__getattr__(item) and returns: getattr