code: public String resolve(String className) throws IOException {
          readLock.lock();
          try {
              if (filters == null || filters.isEmpty()) {
                  return className;
              }
              String cls = className;
              for (ClassNameFilter filter : filters) {
                  cls = filter.resolve(cls);
              }
              return cls;
          } finally {
              readLock.unlock();
          }
      }
docs: 决定类名
  
  @param className 类名
  @return 过滤器执行后的类名