code: protected void addFormParam(Form formData, String name, Object value) throws IllegalArgumentException {
          addFormParam(formData, name, value, false);
      }
docs: Convenience method for adding query and form parameters to a get() or post() call.
  
  @param formData the Form containing the name/value pairs
  @param name the name of the field/attribute to add
  @param value the value of the field/attribute to add