/**
 * Adds production extension attributes to the XML object before building XML.
 * @param xmlObj The XML object representation (parsed JSON) for serialization
 */
export declare function serializeProductionExtensions(xmlObj: any): void;
/**
 * Generates OPC .rels entries for any referenced non-root model parts.
 * @param xmlObj The XML object representation (parsed JSON)
 * @returns Array of relationship entries to include in .rels file
 */
export declare function generatePartRels(xmlObj: any): Array<{
    Id: string;
    Type: string;
    Target: string;
}>;
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