Added $processCollection to the getForGraph method

Author: rennokki

src/Contracts/StatisticsStore.php

@@ -48,7 +48,8 @@ public function getRecords(callable $processQuery = null, callable $processColle
      * format that is easily to read for graphs.
      *
      * @param  callable  $processQuery
+     * @param  callable  $processCollection
      * @return array
      */
-    public function getForGraph(callable $processQuery = null): array;
+    public function getForGraph(callable $processQuery = null, callable $processCollection = null): array;
 }

src/Statistics/Stores/DatabaseStore.php

@@ -86,12 +86,13 @@ public function getRecords(callable $processQuery = null, callable $processColle
      * format that is easily to read for graphs.
      *
      * @param  callable  $processQuery
+     * @param  callable  $processCollection
      * @return array
      */
-    public function getForGraph(callable $processQuery = null): array
+    public function getForGraph(callable $processQuery = null, callable $processCollection = null): array
     {
         $statistics = collect(
-            $this->getRecords($processQuery)
+            $this->getRecords($processQuery, $processCollection)
         );
 
         return $this->statisticsToGraph($statistics);