fun case(equals: String, ignoreCase: Boolean = false, trim: Boolean = true): ListeningFilter<M, Ret, R, RR>
消息内容 == equals
==
fun case(equals: String, ignoreCase: Boolean = false, trim: Boolean = true, onEvent: MessageListener<M, R>): Ret
trim - true 则删除首尾空格后比较
trim
true
ignoreCase - true 则不区分大小写
ignoreCase