import { EventInMsg } from './EventInMsg' ; author Javen
 *  copyright description export class InExternalContactEvent extends EventInMsg { public static EVENT : string = 'change_external_contact' ; private changetype : string ; private userid : string ; private externaluserid : string ; private state : string ; private welcomecode : string ; constructor ( toUserName , fromUserName , createTime , event ) { super ( toUserName , fromUserName , createTime , event ) ; } public get changeType ( ) : string { return this . changetype ; } public set changeType ( changeType ) { this . changetype = changeType ; } public get userId ( ) : string { return this . userid ; } public set userId ( userId ) { this . userid = userId ; } public get externalUserId ( ) : string { return this . externaluserid ; } public set externalUserId ( externalUserId ) { this . externaluserid = externalUserId ; } public get getState ( ) : string { return this . state ; } public set setState ( state ) { this . state = state ; } public get welcomeCode ( ) : string { return this . welcomecode ; } public set welcomeCode ( welcomeCode ) { this . welcomecode = welcomeCode ; } }