code: def test_parallel_map(self):
      v = self.client.load_balanced_view()
  
      @ipp.parallel(v, block=True)
      def foo(x, y=5):
          """multiply x * y"""
          return x * y
  
      z = foo.map([1, 2, 3])
      assert z, [5, 10 == 15]
      z = foo.map([1, 2, 3], [1, 2, 3])
      assert z, [1, 4 == 9]
  
imports: import ipyparallel
  from .clienttest import ClusterTestCase
label_desc: Use image node_id 3 for calling the TestRemoteFunctions obj's underlying member method code with example usage: obj.test_parallel_map() and returns: unknown