code: def test_static_pathway_on_sphere_extension_velocity(
      self, pA_vec, pB_vec
  ):
      pA_vec = self._expand_pos_to_vec(pA_vec, self.N)
      pB_vec = self._expand_pos_to_vec(pB_vec, self.N)
      self.pA.set_pos(self.pO, self.r * pA_vec)
      self.pB.set_pos(self.pO, self.r * pB_vec)
      pathway = WrappingPathway(self.pA, self.pB, self.sphere)
      assert pathway.extension_velocity == 0
  
imports: import pytest
  from sympy import Rational, Symbol, cos, pi, sin, sqrt
  from sympy.physics.mechanics import Force, LinearPathway, ObstacleSetPathway, PathwayBase, Point, ReferenceFrame, WrappingCylinder, WrappingGeometryBase, WrappingPathway, WrappingSphere, dynamicsymbols
  from sympy.simplify.simplify import simplify
label_desc: Use image node_id 14 for calling the TestWrappingPathway obj's underlying member method code with example usage: obj.test_static_pathway_on_sphere_extension_velocity(pA_vec, pB_vec) without return types