code: def test_single_loop_illegal_return(self, target, type_, l):
      with self.assertRaisesRegex(
          tf.errors.InvalidArgumentError,
          "must iterate at least once to initialize",
      ):
          tf.function(target)(type_(l))
  
imports: import itertools
  from absl.testing import parameterized
  import tensorflow
  from tensorflow.python.autograph.tests import reference_test_base
label_desc: Use image node_id 3 for calling the LoopControlFlowTest obj's underlying member method code with example usage: obj.test_single_loop_illegal_return(target, type_, l) without return types