* Create an EXIF file. * @param {String} packname * @param {String} authorname * @param {String} [filename=data]

* Send Contact * @param {String} jid * @param {String|Number} number * @param {String} name * @param {Object} q

* Get name from jid * @param {String} jid * @param {Boolean} withoutContact

* Convert Buffer to Readable Stream * @param {Buffer} buffer * @returns {ReadableStream}

* No Operation *

* Convert Writable Stream to Buffer * @param {WritableStreamCallback} cb Callback with stream * @returns {Promise<Buffer>}