public static function getAllOneToOneRelationshipsForModelBySourceColumnName($modelClassName)
    {
        $relationships = self::getAllRelationshipsForModel($modelClassName);
        $columnRelationships = [];

        foreach ($relationships as $relationship) {
            if ($relationship instanceof OneToOne) {
                $columnName = $relationship->getSourceColumnName();

                $columnRelationships[$columnName] = $relationship;
            }
        }

        return $columnRelationships;
    }