code: def get_mocap_path(motion_name, actor_name=None):
      if motion_name == "dance_together":
          return "./data/SFU/0018/0018_XinJiang002_poses.npz", 0, 800, 4
      else:
          raise ValueError("Define new elif branch")
  
file_path: ml-neuman/render_gathering.py
imports: import os
  import argparse
  import copy
  import joblib
  import imageio
  import torch
  import numpy
  from geometry import transformations
  from models import human_nerf
  from utils import render_utils, utils, ray_utils
  from data_io import neuman_helper
  from options import options
  from models.smpl import SMPL
label_desc: Use image node_id 2 for calling a global function with example usage: get_mocap_path(motion_name, actor_name) and returns: str,  int,  int,  int