@SinceMirai("0.39.0") abstract fun constructMessageSource(kind: Kind, fromUin: Long, targetUin: Long, id: Int, time: Int, internalId: Int, originalMessage: MessageChain): OfflineMessageSource
构造一个 OfflineMessageSource
id - 即 MessageSource.id
internalId - 即 MessageSource.internalId
fromUin - 为用户时为 Friend.id, 为群时需使用 Group.calculateGroupUinByGroupCode 计算
targetUin - 为用户时为 Friend.id, 为群时需使用 Group.calculateGroupUinByGroupCode 计算