@java.lang.Override
        public boolean hasInviteeId() {
            return instance.hasInviteeId();
        }
<code>optional int64 invitee_id = 8;</code>

@return Whether the inviteeId field is set.
turms-client-kotlin/src/main/java/im/turms/client/model/proto/model/group/GroupInvitation.java