code: def construct_list_of_attributes(self):
      l = ["x", "y", "z", "nx", "ny", "nz"]
      # All channels except the 3 DC
      for i in range(
          self._features_dc.shape[1] * self._features_dc.shape[2]
      ):
          l.append("f_dc_{}".format(i))
      for i in range(
          self._features_rest.shape[1] * self._features_rest.shape[2]
      ):
          l.append("f_rest_{}".format(i))
      l.append("opacity")
      for i in range(self._scaling.shape[1]):
          l.append("scale_{}".format(i))
      for i in range(self._rotation.shape[1]):
          l.append("rot_{}".format(i))
      return l
  
imports: import torch
  import numpy
  from utils.general_utils import inverse_sigmoid, get_expon_lr_func, build_rotation
  from torch import nn
  import os
  from utils.system_utils import mkdir_p
  from plyfile import PlyData, PlyElement
  from utils.sh_utils import RGB2SH
  from simple_knn._C import distCUDA2
  from utils.graphics_utils import BasicPointCloud
  from utils.general_utils import strip_symmetric, build_scaling_rotation
label_desc: Use image node_id 15 for calling the GaussianModel obj's underlying member method code with example usage: obj.construct_list_of_attributes() and returns: l