Imbo\Database\Mongo::getMetadata PHP Method

    public function getMetadata($user, $imageIdentifier)
    {
        try {
            $data = $this->getImageCollection()->findOne(['user' => $user, 'imageIdentifier' => $imageIdentifier]);
        } catch (MongoException $e) {
            throw new DatabaseException('Unable to fetch meta data', 500, $e);
        }
        if ($data === null) {
            throw new DatabaseException('Image not found', 404);
        }
        return $this->bsonToArray->toArray($data['metadata']->getArrayCopy());
    }