code: def set_lr_mult(self, args_lr_mult):
      self._optimizer.set_lr_mult(args_lr_mult)
  
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 8 for calling the DistributedOptimizer obj's underlying member method code with example usage: obj.set_lr_mult(args_lr_mult) without return types