code: private boolean isFeatureMethod(MethodNode method) {
      for (Statement stat : AstUtil.getStatements(method)) {
        String label = stat.getStatementLabel();
        if (label == null) continue;
  
        // assertion: is (meant to be) a feature method, so we'll return true in the end
        if (method.isStatic())
          errorReporter.error(method, "Feature methods must not be static");
  
        return true;
      }
  
      return false;
    }
docs: - method name given as string literal (requires source lookup)