+ /**\r
+ * Get a given value inside the values map\r
+ * @param key {String} The key of the value \r
+ * @param specType {String} Expected type (currently "primitive" and "ref" are supported)\r
+ * @param specSubType {String} Expected subtype (depends on the type)\r
+ * @return {String} Value if it is set.\r
+ */\r