code: @Override
      public List<String> parameterMultipleValues(String name) {
          return request.params().getAll(name);
      }
docs: Get the parameter with the given key from the request. The parameter may
  either be a query parameter, or in the case of form submissions, may be a
  form parameter.
  <p/>
  The parameter is decoded by default.
  
  @param name The key of the parameter
  @return The values, possibly an empty list.