code: def testGraphML(self):
      with temporary_file(GRAPHML_EXAMPLE_FILE) as tmpfname:
          try:
              g = Graph.Read_GraphML(tmpfname)
          except NotImplementedError as e:
              self.skipTest(str(e))
  
          self.assertTrue(isinstance(g, Graph))
          self.assertEqual(g.vcount(), 6)
          self.assertEqual(g.ecount(), 7)
          self.assertFalse(g.is_directed())
          self.assertTrue("name" in g.vertex_attributes())
  
          g.write_graphml(tmpfname)
  
imports: import gzip
  import io
  import unittest
  import warnings
  from igraph import Graph, InternalError
  from .utils import temporary_file
label_desc: Use image node_id 9 for calling the ForeignTests obj's underlying member method code with example usage: obj.testGraphML() without return types