src/Potter/Utils/Form/Widget.php
public function addField($id, $options)
    {
        $field = $this->makeField($id, $options);
        $this->fields->put($id, $field);

        return $this;
    }
public function addField($id, $options)
    {
        $field = $this->makeField($id, $options);
        $this->fields->put($id, $field);

        return $this;
    }
@param $id
@param $options

@return $this