code: def testGetTypeExtent(self):
      extent = self.FILE.Get_type_extent(MPI.BYTE)
      self.assertEqual(extent, 1)
  
imports: from mpi4py import MPI
  import mpiunittest
  import os, tempfile, pathlib
label_desc: Use image node_id 14 for calling the BaseTestFile obj's underlying member method code with example usage: obj.testGetTypeExtent() without return types