public Mono<DeleteResult> deleteRelatedUserFromAllRelationshipGroups(
            @NotNull Long ownerId,
            @NotNull Long relatedUserId,
            @Nullable ClientSession session,
            boolean updateRelationshipGroupsMembersVersion) {
        try {
            Validator.notNull(ownerId, "ownerId");
            Validator.notNull(relatedUserId, "relatedUserId");
        } catch (ResponseException e) {
            return Mono.error(e);
        }
        return deleteRelatedUsersFromAllRelationshipGroups(
                Set.of(new UserRelationship.Key(ownerId, relatedUserId)),
                session,
                updateRelationshipGroupsMembersVersion);
    }
@return true if added a new related user to the relationship group.
@implNote We call this method while upserting a relationship into the owner's relationship
          group in a transaction currently, so we don't check whether the owner has a
          relationship with the related user in this method.
turms-service/src/main/java/im/turms/service/domain/user/service/UserRelationshipGroupService.java