public function load()
{
$parameters = $this->getConfig();
$element = new Element\MultiCheckbox($this->getName());
if (!empty($parameters)) {
$element->setValueOptions($parameters);
}
$element->setLabel($this->getProperty()->getName())->setAttribute('id', $this->getName())->setAttribute('required', $this->getProperty()->isRequired())->setAttribute('class', 'input-checkbox')->setValue($this->getValue());
return $element;
}