init_outbound_group_session
actual fun init_outbound_group_session(session: OlmOutboundGroupSessionPointer, random: ByteArray?): ULong
actual fun init_outbound_group_session(session: OlmOutboundGroupSessionPointer, random: ByteArray?): ULong
expect fun init_outbound_group_session(session: OlmOutboundGroupSessionPointer, random: ByteArray?): ULong