class_docstr: An optimizer that wraps another tf.Optimizer, using an allreduce to
  combine gradient values before applying gradients to model weights.
class_docstr_tok: ["An","optimizer","that","wraps","another","tf.Optimizer",",","using","an","allreduce","to","combine","gradient","values","before","applying","gradients","to","model","weights","."]
code: def _apply_dense(self, *args, **kwargs):
      self._optimizer._apply_dense(*args, **kwargs)
  
file_path: analytics-zoo/pyzoo/zoo/tfpark/zoo_optimizer.py
imports: from bigdl.optim.optimizer import OptimMethod
  from zoo.util.tf import process_grad
  import tensorflow
label_desc: Use image node_id 10 for calling the ZooOptimizer obj's underlying member method code with example usage: obj._apply_dense() without return types