code: def testSimpleDtype(self):
      for dtype in _TEST_DTYPES:
          for itype in _TEST_ITYPES:
              self._testSimpleDtype(dtype, itype)
  
imports: import time
  import numpy
  from tensorflow.python.client import session
  from tensorflow.python.eager import context
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import indexed_slices
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import tensor_shape
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import gradients_impl
  from tensorflow.python.ops import ref_variable
  from tensorflow.python.ops import resource_variable_ops
  from tensorflow.python.ops import variables
  from tensorflow.python.platform import test
label_desc: Use image node_id 2 for calling the GatherNdTest obj's underlying member method code with example usage: obj.testSimpleDtype() without return types