code: def testCombinationMaxMinIgnore(self):
      g = self.g
      g.es["name"] = list("ABCDEFG")
      g.simplify(
          combine_edges={
              "weight": "min",
              "weight2": "max",
              "name": "ignore",
          }
      )
      self.assertTrue(g.es["weight"] == [1, 3, 4])
      self.assertTrue(g.es["weight2"] == [2, 3, 6])
      self.assertFalse("name" in g.edge_attributes())
  
imports: import unittest
  from igraph import Graph
label_desc: Use image node_id 12 for calling the AttributeCombinationTests obj's underlying member method code with example usage: obj.testCombinationMaxMinIgnore() without return types