package Ġcom . car ter chen 2 4 7 . alarm scheduler . task Ċ Ċ import Ġcom . car ter chen 2 4 7 . alarm scheduler . model . Data Payload Ċ Ċ interface ĠAlarm Task Ġ{ ĊĠĠĠ Ġfun Ġon Alarm F ires ( alarm Id : ĠInt , Ġdata Payload : ĠData Payload ) Ċ }