/**
* Get the value of an index
*
* @param Index $index
* @return string
*/
public function getIndexValue(Index $index)
{
$values = [];
foreach ($index->getColumns() as $column) {
$values[] = (string) $this->getPropertyValue($column);
}
foreach ($index->getMethods() as $method) {
$values[] = (string) $this->getMethodValue($method);
}
return implode(self::ID_DELIMITER, $values);
}