$articles = Article::aggregate()
    ->search([
        'index' => 'default',
        'text' => ['query' => 'John Doe', 'path' => 'title'],
        'sort' => ['published_at' => -1],
    ])
    ->get()

use MongoDB\Builder\Search;

$articles = Article::search(
    index: 'default',
    text: Search::text(query: 'John Doe', path: 'title'],
    sort: ['published_at' => -1]
]);

namespace MongoDB\Laravel\Query;
class Builder extends \Illuminate\Database\Query\Builder
{
    // Other existing methods
 
    public function search(
        SearchOperator|array|stdClass $operator,
        ?string $index = null,
        ?array $highlight = null,
        ?bool $concurrent = null,
        ?string $searchAfter = null,
        ?string $searchBefore = null,
        ?bool $scoreDetails = null,
        // @param array<string, int>
        ?array $sort = null,
        ?bool $returnStoredSource = null,
        ?array $tracking = null,
    ): AggregationBuilder {
        // implementation will call $this->aggregate()
    }
}