code: public List<IRequestDumpable> createRequestDumpers(DumpConfig config, HttpServerExchange exchange) {
  
          RequestDumperFactory factory = new RequestDumperFactory();
          List<IRequestDumpable> dumpers = new ArrayList<>();
          for(String dumperNames: requestDumpers) {
              IRequestDumpable dumper = factory.create(dumperNames, config, exchange);
              dumpers.add(dumper);
          }
          return dumpers;
      }
docs: use RequestDumperFactory to create dumpers listed in this.requestDumpers
  @param config type: DumpConfig
  @param exchange type: HttpServerExchange
  @return a list of IRequestDumpable, dumpers can dump http request info