class CustomerGroupService {
  constructor(connection: TransactionalConnection, listQueryBuilder: ListQueryBuilder, historyService: HistoryService, eventBus: EventBus, customFieldRelationService: CustomFieldRelationService)
  findAll(ctx: RequestContext, options?: CustomerGroupListOptions, relations: RelationPaths<CustomerGroup> = []) => Promise<PaginatedList<CustomerGroup>>;
  findOne(ctx: RequestContext, customerGroupId: ID, relations: RelationPaths<CustomerGroup> = []) => Promise<CustomerGroup | undefined>;
  getGroupCustomers(ctx: RequestContext, customerGroupId: ID, options?: CustomerListOptions) => Promise<PaginatedList<Customer>>;
  async create(ctx: RequestContext, input: CreateCustomerGroupInput) => Promise<CustomerGroup>;
  async update(ctx: RequestContext, input: UpdateCustomerGroupInput) => Promise<CustomerGroup>;
  async delete(ctx: RequestContext, id: ID) => Promise<DeletionResponse>;
  async addCustomersToGroup(ctx: RequestContext, input: MutationAddCustomersToGroupArgs) => Promise<CustomerGroup>;
  async removeCustomersFromGroup(ctx: RequestContext, input: MutationRemoveCustomersFromGroupArgs) => Promise<CustomerGroup>;
}