export_inbound_group_session
actual fun export_inbound_group_session(session: OlmInboundGroupSessionPointer, key: ByteArray, messageIndex: UInt): ULong
actual fun export_inbound_group_session(session: OlmInboundGroupSessionPointer, key: ByteArray, messageIndex: UInt): ULong
expect fun export_inbound_group_session(session: OlmInboundGroupSessionPointer, key: ByteArray, messageIndex: UInt): ULong