code: def world_to_camera(self):
      M = np.matmul(self.translation_matrix, self.rotation_matrix)
      M /= M[3, 3]
      return M
  
imports: import numpy
  from geometry import transformations
  from geometry.basics import Translation, Rotation, UnstableRotation
label_desc: Use image node_id 9 for calling the CameraPose obj's underlying member method code with example usage: obj.world_to_camera() and returns: M