outbound_group_session_id
actual fun outbound_group_session_id(session: OlmOutboundGroupSessionPointer, sessionId: ByteArray): ULong
actual fun outbound_group_session_id(session: OlmOutboundGroupSessionPointer, sessionId: ByteArray): ULong
expect fun outbound_group_session_id(session: OlmOutboundGroupSessionPointer, sessionId: ByteArray): ULong