import { VisualElement } from '@judo/model-api';
/**
 * Find visual element by its @type property.
 */
export declare function findVisualElementByType<T extends VisualElement = VisualElement>(elements: VisualElement | VisualElement[], type: string): T | undefined;
/**
 * Find visual element by its xmi:id.
 */
export declare function findVisualElementById<T extends VisualElement = VisualElement>(elements: VisualElement | VisualElement[], id: string): T | undefined;
/**
 * Find visual element by its sourceId.
 */
export declare function findVisualElementBySourceId<T extends VisualElement = VisualElement>(elements: VisualElement | VisualElement[], sourceId: string): T | undefined;
/**
 * Flatten visual element tree to array.
 */
export declare function flattenVisualElements(elements: VisualElement | VisualElement[]): VisualElement[];
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