code: def testOutputIsInt64(self):
      labels = np.arange(2)
      predictions = np.arange(2)
      with self.cached_session():
          cm = confusion_matrix.confusion_matrix(
              labels, predictions, dtype=dtypes.int64
          )
          tf_cm = self.evaluate(cm)
      self.assertEqual(tf_cm.dtype, np.int64)
  
imports: import numpy
  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 confusion_matrix
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import random_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 22 for calling the ConfusionMatrixTest obj's underlying member method code with example usage: obj.testOutputIsInt64() without return types