doctrine / mongodb-odm

     * @param string $from Target collection for the $graphLookup operation to

     * search, recursively matching the connectFromField to the connectToField.

     */

    public function graphLookup(string $from) : Stage\GraphLookup

    {

        $stage = new Stage\GraphLookup($this, $from, $this->dm, $this->class);

        $this->addStage($stage);

        return $stage;

    }

    /**

     * Groups documents by some specified expression and outputs to the next

     *

     * @see https://docs.mongodb.org/manual/reference/operator/aggregation/lookup/

     */

    public function lookup(string $from) : Stage\Lookup

    {

        $stage = new Stage\Lookup($this, $from, $this->dm, $this->class);

        $this->addStage($stage);

        return $stage;

    }

    /**

     * Filters the documents to pass only the documents that match the specified