$options :
push( $job, $data = '', $queue = null)
later( $delay, $job, $data = '', $queue = null)
pop( $queue = null)
marshal()
createPayload( $job, $data = '', $queue = null)
createPlainPayload( $job, $data)
setMeta( $payload, $key, $value)
resolveJob( $payload)
