Phalcon\Mvc\MongoCollection::_getResultset PHP Method

    protected static function _getResultset($params, CollectionInterface $collection, $connection, $unique)
    {
        // @codingStandardsIgnoreEnd
        /**
         * Check if "class" clause was defined
         */
        if (isset($params['class'])) {
            $classname = $params['class'];
            $base = new $classname();
            if (!$base instanceof CollectionInterface || $base instanceof Document) {
                throw new Exception("Object of class '" . $classname . "' must be an implementation of \n                    Phalcon\\Mvc\\CollectionInterface or an instance of Phalcon\\Mvc\\Collection\\Document");
            }
        } else {
            $base = $collection;
        }
        $source = $collection->getSource();
        if (empty($source)) {
            throw new Exception("Method getSource() returns empty string");
        }
        /**
         * @var \Phalcon\Db\Adapter\MongoDB\Collection $mongoCollection
         */
        $mongoCollection = $connection->selectCollection($source);
        if (!is_object($mongoCollection)) {
            throw new Exception("Couldn't select mongo collection");
        }
        $conditions = [];
        if (isset($params[0]) || isset($params['conditions'])) {
            $conditions = isset($params[0]) ? $params[0] : $params['conditions'];
        }
        /**
         * Convert the string to an array
         */
        if (!is_array($conditions)) {
            throw new Exception("Find parameters must be an array");
        }
        $options = [];
        /**
         * Check if a "limit" clause was defined
         */
        if (isset($params['limit'])) {
            $limit = $params['limit'];
            $options['limit'] = (int) $limit;
            if ($unique) {
                $options['limit'] = 1;
            }
        }
        /**
         * Check if a "sort" clause was defined
         */
        if (isset($params['sort'])) {
            $sort = $params["sort"];
            $options['sort'] = $sort;
        }
        /**
         * Check if a "skip" clause was defined
         */
        if (isset($params['skip'])) {
            $skip = $params["skip"];
            $options['skip'] = (int) $skip;
        }
        if (isset($params['fields']) && is_array($params['fields']) && !empty($params['fields'])) {
            $options['projection'] = [];
            foreach ($params['fields'] as $key => $show) {
                $options['projection'][$key] = $show;
            }
        }
        /**
         * Perform the find
         */
        $cursor = $mongoCollection->find($conditions, $options);
        $cursor->setTypeMap(['root' => get_called_class(), 'document' => 'object']);
        if (true === $unique) {
            /**
             * Looking for only the first result.
             */
            return current($cursor->toArray());
        }
        /**
         * Requesting a complete resultset
         */
        $collections = [];
        foreach ($cursor as $document) {
            /**
             * Assign the values to the base object
             */
            $collections[] = $document;
        }
        return $collections;
    }