import { ApiPropertyOptions } from '@nestjs/swagger';
/**
 * Decorator for the 'contain' boolean property.
 * Indicates if the thumbnail image should be contained (fully visible) or cropped.
 *
 * @param {ApiPropertyOptions} options - Swagger API property options.
 * @returns {PropertyDecorator} Decorators combining transformation, validation, and metadata.
 */
export declare function ThumbnailContain(options?: ApiPropertyOptions): PropertyDecorator;