docs: protected void parseImports() {
      List<Element> imports = rootElement.elements("import");
      for (Element theImport : imports) {
        String importType = theImport.attribute("importType");
        XMLImporter importer = this.getImporter(importType, theImport);
        if (importer == null) {
          addError("Could not import item of type " + importType, theImport);
        } else {
          importer.importFrom(theImport, this);
        }
      }
    }