/**
 * The OverlayContainer is the container in which all overlays will load.
 * It should be provided in the root component to ensure it is properly shared.
 */
export declare class OverlayContainer {
    private _containerElement;
    /**
     * This method returns the overlay container element.  It will lazily
     * create the element the first time  it is called to facilitate using
     * the container in non-browser environments.
     * @returns {HTMLElement} the container element
     */
    getContainerElement(): HTMLElement;
    /**
     * Create the overlay container element, which is simply a div
     * with the 'md-overlay-container' class on the document body.
     */
    private _createContainer();
}