code: def test_call_type(self):
      scalar = loss_scale_module.FixedLossScale(123)
      self.assertIsInstance(scalar(), tensor_lib.Tensor)
  
imports: from absl.testing import parameterized
  import numpy
  from tensorflow.python.data.ops import dataset_ops
  from tensorflow.python.distribute import distribute_lib
  from tensorflow.python.distribute import mirrored_strategy
  from tensorflow.python.eager import context
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import tensor
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import check_ops
  from tensorflow.python.ops import cond
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import variables
  from tensorflow.python.platform import test
  from tensorflow.python.training.experimental import loss_scale
label_desc: Use image node_id 3 for calling the FixedLossScaleTest obj's underlying member method code with example usage: obj.test_call_type() without return types