import tensorflow as tf

            self.conv2 = self._residual_block('conv2_2', self.conv2, 64)
            _debug(self.conv2)

        with tf.variable_scope('conv3_x'):
            self.conv3 = self._residual_block('conv3_1', self.conv2, 128, pool_first=True, strides=2)
            _debug(self.conv3)
