class_docstr: Class for testing GRU layer
class_docstr_tok: ["Class","for","testing","GRU","layer"]
code: def setUp(self):
      super(GRULayer, self).setUp()
      self.gru_params_dict = dict(
          dropout=[{"dropout_W": 0.0, "dropout_U": 0.0}],
          regularizer=[
              {
                  "W_regularizer": None,
                  "U_regularizer": None,
                  "b_regularizer": None,
              }
          ],
      )
      self.gru_layer_params = list(
          itertools.product(*self.gru_params_dict.values())
      )
  
imports: import unittest
  import numpy
  import os
  import shutil
  import tempfile
  import itertools
  import coremltools
  from coremltools._deps import _HAS_KERAS_TF, _HAS_KERAS2_TF
  from coremltools.models.utils import _macos_version, _is_macos
  import pytest
label_desc: Use image node_id 1 for calling the GRULayer obj's underlying member method code with example usage: obj.setUp() without return types