code: def _block_name(self, pathway_idx, stage_idx, block_idx):
      return "pathway{}-stage{}-block{}".format(
          pathway_idx, stage_idx, block_idx
      )
  
file_path: ClassyVision/classy_vision/models/resnext3d_stage.py
imports: from collections import OrderedDict
  import torch.nn
  from .resnext3d_block import ResBlock
label_desc: Use image node_id 2 for calling the ResStageBase obj's underlying member method code with example usage: obj._block_name(pathway_idx, stage_idx, block_idx) and returns: str