Dynamic::getFieldsRestrictionsEngine

public function getFieldsRestrictionsEngine(): string
{
	$parentFieldsRestrictions = parent::getFieldsRestrictionsEngine();
	$dynamicFieldRestrictionManager = new FieldRestrictionManager(
		FieldRestrictionManager::MODE_KANBAN,
		[FieldRestrictionManagerTypes::OBSERVERS],
		$this->factory->getEntityTypeId()
	);
	$dynamicFieldsRestrictions = $dynamicFieldRestrictionManager->fetchRestrictedFieldsEngine(
		$this->getGridId(),
		[],
		$this->getFilter()
	);

	return implode("\n", [$parentFieldsRestrictions, $dynamicFieldsRestrictions]);
}