code: def test_def_node(self):
      foo = inline("def foo(x): return x * x", **self.test_kwds)["foo"]
      self.assertEqual(foo(7), 49)
  
file_path: catboost/contrib/tools/cython/Cython/Build/Tests/TestInline.py
imports: import os, tempfile
  from Cython.Shadow import inline
  from Cython.Build.Inline import safe_type
  from Cython.TestUtils import CythonTest
label_desc: Use image node_id 7 for calling the TestInline obj's underlying member method code with example usage: obj.test_def_node() without return types