code: def testBasicQint8(self):
      self._testDequantizeOp(
          np.array([-128, 0, 127]), -1.0, 2.0, dtypes.qint8
      )
      self._testDequantizeOp(
          np.array([-2, 4, -17]), -5.0, -3.0, dtypes.qint8
      )
      self._testDequantizeOp(
          np.array([0, -4, 42, -108]), 5.0, 40.0, dtypes.qint8
      )
  
file_path: tensorflow-upstream/tensorflow/python/ops/dequantize_op_test.py
imports: import numpy
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.ops import array_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 4 for calling the DequantizeOpTest obj's underlying member method code with example usage: obj.testBasicQint8() without return types