+ /**\r
+ * Performs the import for the given file\r
+ * \r
+ * @param parent Resource parent of the imported entity in Simantics database\r
+ * @param file Path file location of file\r
+ * @return Optional Resource of the imported entity in Simantics database\r
+ * @throws Exception\r
+ */\r
+ public abstract Optional<Resource> perform(Resource parent, Path file) throws Exception;\r