import { Attribute } from '../attribute/Attribute';
export declare const systemAttributePrimary: {
    name: string;
    description: string;
    type: import("../..").DataType;
    required: boolean;
    primary: boolean;
};
export declare const systemAttributesTimeTracking: Attribute[];
export declare const systemAttributesUserTracking: Attribute[];
export declare const systemAttributeState: Attribute;
export declare const systemAttributeI18n: Attribute;