code: @Override
      protected File[] getReportList() {
          File file = new File(reportDirectory);
          if (!file.exists())
             file = new File(FileReportsProvider.class.getResource(reportDirectory).getFile());
          if (!file.exists()) {
              errors.add("Couldn't open report directory, doesn't exist.");
              return null;
          }
          return file.listFiles();
      }
docs: {@inheritDoc}