code: def setUp(self):
      self.matching = Matching(
          leda_graph,
          [12, 10, 8, 13, -1, 14, 9, -1, 2, 6, 1, -1, 0, 3, 5],
          "type",
      )
  
file_path: python-igraph/tests/test_matching.py
imports: import unittest
  from igraph import Graph, InternalError, Matching
label_desc: Use image node_id 1 for calling the MatchingTests obj's underlying member method code with example usage: obj.setUp() without return types