code: protected String param(String name, List<FormItem> formItems){
          return RequestUtils.param(name, formItems);
      }
docs: Convenience method to get a parameter in case <code>multipart/form-data</code> request was used.
  
  Returns value of one named parameter from request. If this name represents multiple values, this
  call will result in {@link IllegalArgumentException}.
  
  @param name name of parameter.
  @param formItems form items retrieved from <code>multipart/form-data</code> request.
  @return value of request parameter.
  @see org.javalite.activeweb.RequestUtils#param(String)