code: def append(
      self,
      layer_depth: int,
      with_regularisation: bool,
      optimizer_schedulers,
      param,
  ):
      key = (with_regularisation, layer_depth)
      if key not in self.all_groups:
          update_interval = optimizer_schedulers["lr"].update_interval
          lr_scale = self.layer_decay ** (
              self.num_layers + 1 - layer_depth
          )
          self.all_groups[key] = {
              "params": [],
              "lr": LayerDecayScheduler(
                  optimizer_schedulers["lr"], lr_scale, update_interval
              ),
              "weight_decay": self.weight_decay_main_config
              if with_regularisation
              else 0.0,
          }
      self.all_groups[key]["params"].append(param)
  
file_path: vissl/vissl/optimizers/param_groups/layer_decay.py
imports: import re
  from typing import Dict
  import torch.nn
  from fvcore.common.param_scheduler import ParamScheduler
  from vissl.config import AttrDict
  from vissl.optimizers.param_groups.registry import register_param_group_constructor
  from vissl.optimizers.param_scheduler.layer_decay_scheduler import LayerDecayScheduler
  from vissl.utils.misc import is_apex_available
label_desc: Use image node_id 2 for calling the LayerDecayGroupConstructor obj's underlying member method code with example usage: obj.append(layer_depth, with_regularisation, optimizer_schedulers, param) without return types