self._contains_op(
              output_graphdef, 'UniformQuantizedConvolutionHybrid'
          )
      )
      self.assertFalse(self._contains_op(output_graphdef, 'Conv2D'))
      if enable_per_channel_quantization:
        self.assertTrue(
            self._contains_op(
                output_graphdef,
                'UniformQuantizedConvolutionHybrid',
                'rhs_quantization_axis',