import { ToolbarSubMenuOpeningEventArgs as ToolbarSubMenuOpeningEventArgs_internal } from "./ToolbarSubMenuOpeningEventArgs";
export declare class IgxToolbarSubMenuOpeningEventArgs {
    protected createImplementation(): ToolbarSubMenuOpeningEventArgs_internal;
    protected _implementation: any;
    /**
     * @hidden
     */
    get i(): ToolbarSubMenuOpeningEventArgs_internal;
    private onImplementationCreated;
    constructor();
    protected _provideImplementation(i: any): void;
}