import { Base, Nullable$1, Type } from "igniteui-webcomponents-core";
import { ST_FilterOperator } from "./ST_FilterOperator";
import { XmlPartManagerBase } from "./XmlPartManagerBase";
/**
 * @hidden
 */
export declare class CT_CustomFilter extends Base {
    static $t: Type;
    private a;
    private e;
    constructor();
    b: Nullable$1<ST_FilterOperator>;
    d: string;
    static f(a: XmlPartManagerBase, b: Nullable$1<ST_FilterOperator>, c: string): {
        p1: Nullable$1<ST_FilterOperator>;
        p2: string;
    };
    static g(a: XmlPartManagerBase, b: string, c: Nullable$1<ST_FilterOperator>, d: string): void;
    toString(): string;
}