deleteAll?: boolean,// Delete all metadata if set to true
author?: string,// The author of the document
creationDate?: Date,// The creation date of the document (format: yyyy/MM/dd HH:mm:ss)
creator?: string,// The creator of the document
keywords?: string,// The keywords for the document
modificationDate?: Date,// The modification date of the document (format: yyyy/MM/dd HH:mm:ss)
producer?: string,// The producer of the document
subject?: string,// The subject of the document
title?: string,// The title of the document
//trapped?: string, // The trapped status of the document
//allRequestParams?: object, // Map list of key and value of custom parameters. Note these must start with customKey and customValue if they are non-standard