code: def prepare(self, param_groups):
      self.optimizer = torch.optim.RMSprop(
          param_groups,
          lr=self._lr,
          momentum=self._momentum,
          weight_decay=self._weight_decay,
          alpha=self._alpha,
          eps=self._eps,
          centered=self._centered,
      )
  
file_path: ClassyVision/classy_vision/optim/rmsprop.py
imports: from typing import Any, Dict
  import torch.optim
  from classy_vision.generic.util import is_pos_float
  from .None import ClassyOptimizer, register_optimizer
label_desc: Use image node_id 2 for calling the RMSProp obj's underlying member method code with example usage: obj.prepare(param_groups) without return types