code: def get_captures_by_cam_id(self, cam_id):
      assert cam_id < self.num_cams
      cap_index = self.cam_id_to_index[cam_id]
      caps = []
      for i in cap_index:
          caps.append(self.captures[i])
      return caps
  
file_path: ml-neuman/scenes/scene.py
imports: import os
  from tqdm import tqdm
label_desc: Use image node_id 4 for calling the RigCameraScene obj's underlying member method code with example usage: obj.get_captures_by_cam_id(cam_id) and returns: caps