PHPORM-50 Remove call to deprecated Collection::count for estimatedDocumentCount

https://www.mongodb.com/docs/php-library/current/reference/method/MongoDBCollection-count/

Not using countDocuments because it doesn't work with transactions.

Author: GromNaN

CHANGELOG.md

@@ -10,6 +10,7 @@ All notable changes to this project will be documented in this file.
 - Throw an exception for unsupported `Query\Builder` methods [#9](https://github.com/GromNaN/laravel-mongodb-private/pull/9) by [@GromNaN](https://github.com/GromNaN).
 - Throw an exception when `Query\Builder::orderBy()` is used with invalid direction [#7](https://github.com/GromNaN/laravel-mongodb-private/pull/7) by [@GromNaN](https://github.com/GromNaN).
 - Throw an exception when `Query\Builder::push()` is used incorrectly [#5](https://github.com/GromNaN/laravel-mongodb-private/pull/5) by [@GromNaN](https://github.com/GromNaN).
+- Remove call to deprecated `Collection::count` for `countDocuments` [#18](https://github.com/GromNaN/laravel-mongodb-private/pull/18) by [@GromNaN](https://github.com/GromNaN).
 
 ## [3.9.2] - 2022-09-01
 

src/Query/Builder.php

@@ -273,7 +273,7 @@ public function toMql(): array
                     $aggregations = blank($this->aggregate['columns']) ? [] : $this->aggregate['columns'];
 
                     if (in_array('*', $aggregations) && $function == 'count') {
-                        return ['count' => [$wheres, []]];
+                        return ['estimatedDocumentCount' => [$wheres, []]];
                     } elseif ($function == 'count') {
                         // Translate count into sum.
                         $group['aggregate'] = ['$sum' => 1];
@@ -403,7 +403,7 @@ public function getFresh($columns = [], $returnLazy = false)
             $this->columns = [];
         }
 
-        $command = $this->toMql($columns);
+        $command = $this->toMql();
         assert(count($command) >= 1, 'At least one method call is required to execute a query');
 
         $result = $this->collection;