finlabsindia/wp-content/plugins/jetpack/sync/interface.jetpack-sync-codec.php

<?php

/**
 * Very simple interface for encoding and decoding input
 * This is used to provide compression and serialization to messages
 **/
interface iJetpack_Sync_Codec {
	// we send this with the payload so we can select the appropriate decoder at the other end
	public function name();

	public function encode( $object );

	public function decode( $input );
}