import { Collection } from './collection';
import { Data } from './types';
export declare abstract class Thing {
    private collection;
    private data;
    private identifier;
    static IDENTIFIER: string;
    static COLLECTION: Collection;
    constructor(collection: Collection, data?: Data, identifier?: string | null);
    attr: string;
    static getThingProperties(): void;
    isInstantiated(): boolean;
}