code: public List<String> getValuesList(String name) {
          final List<String> list = new ArrayList<>();
          for (HttpField f : this)
              if (f.getName().equalsIgnoreCase(name))
                  list.add(f.getValue());
          return list;
      }
docs: Get multiple header of the same name
  
  @param name the case-insensitive field name
  @return List the header values