code: def config_path(cls):
      return "configs/models/m4c/defaults.yaml"
  
imports: import functools
  import logging
  import math
  import torch
  import torch.nn.functional
  from mmf.common.registry import registry
  from mmf.models.base_model import BaseModel
  from mmf.modules.layers import ClassifierLayer
  from mmf.utils.build import build_image_encoder
  from omegaconf import OmegaConf
  from torch import nn
label_desc: Use image node_id 2 for calling the M4C obj's underlying member method code with example usage: obj.config_path(cls) and returns: str