Code clean up.

app/Helpers/Chart/MetaPieChartInterface.php

@@ -18,7 +18,6 @@
  * You should have received a copy of the GNU General Public License
  * along with Firefly III.  If not, see <http://www.gnu.org/licenses/>.
  */
-
 declare(strict_types=1);
 
 namespace FireflyIII\Helpers\Chart;
@@ -28,9 +27,7 @@ use FireflyIII\User;
 use Illuminate\Support\Collection;
 
 /**
- * Interface MetaPieChartInterface
- *
- * @package FireflyIII\Helpers\Chart
+ * Interface MetaPieChartInterface.
  */
 interface MetaPieChartInterface
 {
@@ -47,54 +44,54 @@ interface MetaPieChartInterface
      *
      * @return MetaPieChartInterface
      */
-    public function setAccounts(Collection $accounts): MetaPieChartInterface;
+    public function setAccounts(Collection $accounts): self;
 
     /**
      * @param Collection $budgets
      *
      * @return MetaPieChartInterface
      */
-    public function setBudgets(Collection $budgets): MetaPieChartInterface;
+    public function setBudgets(Collection $budgets): self;
 
     /**
      * @param Collection $categories
      *
      * @return MetaPieChartInterface
      */
-    public function setCategories(Collection $categories): MetaPieChartInterface;
+    public function setCategories(Collection $categories): self;
 
     /**
      * @param bool $collectOtherObjects
      *
      * @return MetaPieChartInterface
      */
-    public function setCollectOtherObjects(bool $collectOtherObjects): MetaPieChartInterface;
+    public function setCollectOtherObjects(bool $collectOtherObjects): self;
 
     /**
      * @param Carbon $end
      *
      * @return MetaPieChartInterface
      */
-    public function setEnd(Carbon $end): MetaPieChartInterface;
+    public function setEnd(Carbon $end): self;
 
     /**
      * @param Carbon $start
      *
      * @return MetaPieChartInterface
      */
-    public function setStart(Carbon $start): MetaPieChartInterface;
+    public function setStart(Carbon $start): self;
 
     /**
      * @param Collection $tags
      *
      * @return MetaPieChartInterface
      */
-    public function setTags(Collection $tags): MetaPieChartInterface;
+    public function setTags(Collection $tags): self;
 
     /**
      * @param User $user
      *
      * @return MetaPieChartInterface
      */
-    public function setUser(User $user): MetaPieChartInterface;
+    public function setUser(User $user): self;
 }