/**
* Get the instance of the current fieldtype
*/
protected function getFieldtypeInstance($field_type = NULL, $changed = array())
{
$field_type = $field_type ?: $this->getFieldType();
$values = array_merge($this->getValues(), $changed);
$facade = new FieldFacade($this->getId(), $values);
$facade->setContentType($this->getContentType());
return $facade->getNativeField();
}
