code: def set_nerf_option(parser):
      nerf_opt = parser.add_argument_group("NeRF")
      nerf_opt.add_argument(
          "--nerf_depth", type=int, default=8, help="network depth"
      )
      nerf_opt.add_argument(
          "--nerf_width", type=int, default=256, help="network width"
      )
      nerf_opt.add_argument(
          "--use_viewdirs",
          type=str2bool,
          default=True,
          help="use directions as network input",
      )
      nerf_opt.add_argument(
          "--specular_can",
          type=str2bool,
          default=True,
          help="no specular in canonical space",
      )
  
file_path: ml-neuman/options/options.py
imports: import sys
  import os
  import json
  from utils import utils
label_desc: Use image node_id 6 for calling a global function with example usage: set_nerf_option(parser) without return types