import tensorflow as tf

            X = self.conv('DZ2', X, 512, 1, 1)
            X = tf.nn.leaky_relu(X, 0.2)
            X = self.conv('DZ3', X, 512, 1, 1)
            X = tf.nn.leaky_relu(X, 0.2)
            X = self.conv('DZ4', X, 512, 1, 1)
            X = tf.nn.leaky_relu(X, 0.2)
