code: def __init__(self, optimizer, prefix=""):
      self._optimizer = optimizer
      self._prefix = prefix
  
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 1 to create a new DistributedOptimizer object from inherited base classes: mx.optimizer with example: obj = DistributedOptimizer(optimizer, prefix)