import { IClassRef, IEntityRef, IPropertyRef } from '@allgemein/schema-api';
export declare class LabelHelper {
    /**
     * Get label for an entity if exists
     * - looking for properties marked with @Label
     * - looking for function "label()" or variable "label"
     * - looking for variable "$label"
     *
     * @param entity
     * @param ref
     * @param sep
     * @param max
     */
    static labelForEntity(entity: any, ref: IClassRef | IEntityRef, sep?: string, max?: number): string;
    static labelForProperty(property: IPropertyRef): string;
}