crypto.keyBackupDecryptionKeyCached
"crypto.keyBackupDecryptionKeyCached": (version: string) => void
crypto.keyBackupFailed
"crypto.keyBackupFailed": (errCode: string) => void
crypto.keyBackupSessionsRemaining
"crypto.keyBackupSessionsRemaining": (remaining: number) => void
crypto.keyBackupStatus
"crypto.keyBackupStatus": (enabled: boolean) => void