MegolmRoomEventEncryptionService
constructor(roomStore: RoomStore, loadMembersService: LoadMembersService, roomStateStore: RoomStateStore, olmCryptoStore: OlmCryptoStore, keyBackupService: KeyBackupService, outgoingRoomKeyRequestEventHandler: OutgoingRoomKeyRequestEventHandler, olmEncryptionService: OlmEncryptionService)