export declare class AttachmentDto {
    id: string;
    filename: string;
    size: number;
    url: string;
    proxy_url: string;
    description?: string | undefined;
    content_type?: string | undefined;
    height?: number | null | undefined;
    width?: number | null | undefined;
    ephemeral?: boolean | undefined;
    constructor(id: string, filename: string, size: number, url: string, proxy_url: string, description?: string | undefined, content_type?: string | undefined, height?: number | null | undefined, width?: number | null | undefined, ephemeral?: boolean | undefined);
}