/**
* Adds a field
*
* @param Field $field
* @return SettingsPage
*/
public function addField(Field $field)
{
$field->setSection($this->currentSection)->setOptionName($this->registry['option_name']);
if (isset($this->registry['field_values'][$field->getId()])) {
$field->setValue($this->registry['field_values'][$field->getId()]);
}
$this->registry['fields'][] = $field;
return $this;
}