code: def test_outarg(self, xp, dtype1, dtype2):
      def impl(x, y, z):
          xp.add(x, y, out=z)
          return z
  
      return impl
  
imports: import itertools
  import unittest
  from cupy import testing
  from cupy_tests.core_tests.fusion_tests import fusion_utils
label_desc: Use image node_id 2 for calling the TestFusionOutDtype obj's underlying member method code with example usage: obj.test_outarg(xp, dtype1, dtype2) and returns: impl, z