/**
 * Represents supported version of the "OData-Version" header, which is part
 * of the Open Data Protocol standard.
 *
 * @public
 */
export default class ODataVersion {
    /**
     * Represents version 3.0 for the "OData-Version" header
     */
    static v3: ODataVersion;
    /**
     * Represents version 4.0 for the "OData-Version" header
     */
    static v4: ODataVersion;
    private _versionString;
    /**
     * Attempt to parse the "OData-Version" header.
     *
     * @remarks
     * If the "OData-Version" header is present, this returns the
     * corresponding ODataVersion constant.  An error is thrown if
     * the version number is not supported.  If the header is missing,
     * then undefined is returned.
     */
    static tryParseFromHeaders(headers: Headers): ODataVersion | undefined;
    /**
     * Returns the "OData-Version" value, for example "4.0".
     */
    toString(): string;
    private constructor();
}
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