import { Nullable } from '../../../../types/general';
import { Annotation } from '../annotations/annotation.abstract';
import { AnnotationAction } from './annotation-action.abstract';
/**
 * Sync up selection action
 */
export declare class SyncUpSelectionAction extends AnnotationAction {
  isFlushable: boolean;
  constructor();
  /**
   * annotation null
   *
   * @returns {Nullable<Annotation>} null
   */
  toAnnotation(): Nullable<Annotation>;
}
