code: private File getDataFile(String destination) {
          File destinationMetaDir = new File(dataDir, destination);
          if (!destinationMetaDir.exists()) {
              try {
                  FileUtils.forceMkdir(destinationMetaDir);
              } catch (IOException e) {
                  throw new CanalMetaManagerException(e);
              }
          }
  
          return new File(destinationMetaDir, dataFileName);
      }
docs: ============================ helper method ======================