/**
 *
 *
 *   Represents a data attachment that can be stored either as a CouchDB attachment or via object
 *  storage.
 */
export declare class DataAttachment {
    /**
     *
     *  The identifier of the attachment if stored as a CouchDB attachment.
     */
    couchDbAttachmentId: string | undefined;
    /**
     *
     *  The identifier of the attachment if stored using the object storage service.
     */
    objectStoreAttachmentId: string | undefined;
    /**
     *
     *  The Uniform Type Identifiers of the attachment, ordered by priority.
     */
    utis: Array<string>;
    /**
     *
     *
     *   Algorithm used on the CLIENT SIDE to compress the data attachment.
     *   Null means that the document was not compressed because the tried algorithms could not actually
     *  compress the data
     *   (because for example it was an already compressed format) or no algorithms were tried.
     */
    compressionAlgorithm: string | undefined;
    /**
     *
     *
     *   A string used by the SDK to mark which compression algorithms were tried.
     *   Null means that no compression algorithms were tried.
     *   If an SDK reads some data that is not compressed, if this value indicates that the data was
     *  created with an older
     *   version of the SDK then the SDK may try to use any newly available algorithms to compress the
     *  data.
     */
    triedCompressionAlgorithmsVersion: string | undefined;
    /**
     *
     *
     *   Value computed by the backend, the actual size of the data stored for the attachment, in bytes.
     */
    storedDataSize: number | undefined;
    /**
     *
     *
     *   Value provided by the client, the real size of the data after it has been decrypted and
     *  decompressed, in bytes.
     *   This value is not used or verified by the backend.
     */
    realDataSize: number | undefined;
    constructor(partial: Partial<DataAttachment>);
    toJSON(): object;
    static fromJSON(json: any, ignoreUnknownKeys?: boolean, path?: Array<string>): DataAttachment;
}