{
	"display": string,
	"contentMetadata": [
		{} // see MetadataSpecPojo below
	]
}
//////////////////////////////////
 
	public static class MetadataSpecPojo {
		public String fieldName; // Any string, the key for generated array in "doc.metadata"
		public String scriptlang; // One of "javascript", "regex", "xpath"
		public String script; // The script that will generate the array in "doc.metadata" (under fieldName)
		public String flags; // Standard Java regex field (regex/xpath only), plus "H" to decode HTML, "D": will allow duplicate strings (by default they are de-duplicated), plus the following custom flags:
								// For javascript (defaults to "t" if none specified), "t" the script receives the doc fullText ("text"), "d" the script receives the entire doc (_doc), "m" the script receives the doc.metadata (_metadata)
								// For xpath: "o": if the XPath expression points to an HTML (/XML) object, then this object is converted to JSON and stored as an object in the corresponding metadata field array. (Can also be done via the deprecated "groupNum":-1)
		public String replace; // Replacement string for regex/xpath+regex matches, can include capturing groups as $1 etc
		public Boolean store; // Whether this field should be stored in the DB or discarded after the harvet processing
		public Boolean index; // Whether this field should be full-text indexed or just stored in the DB
	}