declare module 'guacamole-client' {
  /**
   * A hidden input field which attempts to keep itself focused at all times,
   * except when another input field has been intentionally focused, whether
   * programatically or by the user. The actual underlying input field, returned
   * by getElement(), may be used as a reliable source of keyboard-related events,
   * particularly composition and input events which may require a focused input
   * field to be dispatched at all.
   * @constructor
   */
  export class InputSink {
    /**
     * Attempts to focus the underlying input field. The focus attempt occurs
     * asynchronously, and may silently fail depending on browser restrictions.
     */
    focus(): void;

    /**
     * Returns the underlying input field. This input field MUST be manually
     * added to the DOM for the Guacamole.InputSink to have any effect.
     */
    getElement(): HTMLElement;
  }
}