public static function isHash(string $strategy) : bool
    {
        return $strategy === ClassMetadata::STORAGE_STRATEGY_SET || $strategy === ClassMetadata::STORAGE_STRATEGY_ATOMIC_SET;
    }
public static function isHash(string $strategy) : bool
    {
        return $strategy === ClassMetadata::STORAGE_STRATEGY_SET || $strategy === ClassMetadata::STORAGE_STRATEGY_ATOMIC_SET;
    }
public static function isHash ( string $ strategy ) : bool { return $ strategy === ClassMetadata :: STORAGE_STRATEGY_SET || $ strategy === ClassMetadata :: STORAGE_STRATEGY_ATOMIC_SET ; }
Returns whether Collection hold associative array.
Returns whether Collection hold associative array .