code: def extrinsic_matrix(self):
      return self.world_to_camera_3x4
  
imports: import numpy
  from geometry import transformations
  from geometry.basics import Translation, Rotation, UnstableRotation
label_desc: Use image node_id 11 for calling the CameraPose obj's underlying member method code with example usage: obj.extrinsic_matrix() and returns: self