code: def get_specular_value(self, points, view_dirs):
      g = self.implicit_network.gradient(points)
      normals = g[:, 0, :]
  
      specular_shading = self.specular_network(normals, view_dirs)
      return specular_shading.expand([-1, 3])
  
imports: import torch
  import torch.nn
  import numpy
  import trimesh
  import os
  from utils import rend_util
  from model.embedder import *
  from model.ray_tracing import RayTracing
  from model.sample_network import SampleNetwork
label_desc: Use image node_id 6 for calling the IFNetwork obj's underlying member method code with example usage: obj.get_specular_value(points, view_dirs) and returns: specular_shading