import { SwcHTMLOptGroupElementBase } from '../elements/base/SwcHTMLOptGroupElementBase';
export declare class SwcObjectOptGroup extends SwcHTMLOptGroupElementBase {
    _swcValue: any;
    private _renderedNodes;
    onValueChange(): void;
    set swcValue(val: any);
    get swcValue(): any;
    renderTemplate(): string;
    connectedCallback(): void;
    private updateUI;
    private render;
}
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