code: def test_valid_multipoint_with_elevation(self):
      mpoint = geojson.MultiPoint([(10, 20, 30), (30, 40, 50)])
      self.assertEqual(mpoint.is_valid, True)
  
imports: import unittest
  import geojson
label_desc: Use image node_id 3 for calling the TestValidationMultipoint obj's underlying member method code with example usage: obj.test_valid_multipoint_with_elevation() without return types