code: def testReduceMeanF16(self, index_dtype):
      if np.float16 in self.all_types:
          self._testReduction(
              math_ops.reduce_mean,
              np.mean,
              np.float16,
              self.ONES,
              index_dtype,
          )
  
imports: import functools
  import itertools
  from absl.testing import parameterized
  import numpy
  from tensorflow.compiler.tests import xla_test
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors_impl
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.platform import googletest
label_desc: Use image node_id 9 for calling the ReduceOpsTest obj's underlying member method code with example usage: obj.testReduceMeanF16(index_dtype) without return types