import { InjectionToken } from '@angular/core';
/**
 * @public
 */
export declare function defaultEventArgumentFactory(): string;
/**
 * @public
 */
export declare const IoEventArgumentToken: InjectionToken<string>;
/**
 * @public
 * @deprecated Since v10.4.0 - Use {@link IoEventArgumentToken} instead!
 */
export declare const EventArgumentToken: InjectionToken<string>;
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