code: def testInt64Basic(self):
      self._testBasic(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 5 for calling the ConfusionMatrixTest obj's underlying member method code with example usage: obj.testInt64Basic() without return types