input: Write a function to determine if it is possible to get a 3D vector sorted in non-decreasing order by adjusting its components. If it is possible return True else return False. If the vector is missing any component then return False.
  assert sort_vector3D(Vector3D(1, 2, 3))==True
  assert sort_vector3D(Vector3D(3, 5, 4))==False
  assert sort_vector3D(Vector3D(4, 3, 1))==False
  assert sort_vector3D(Vector3D(3, 4, 4))==True
  assert sort_vector3D(Vector3D(1, 2, None))==False
output: def sort_vector3D(vector):
      if None in vector:
          return False
      return sorted(vector) == list(vector)