Expand API with budget limits

app/Models/BudgetLimit.php

@@ -22,11 +22,21 @@ declare(strict_types=1);
 
 namespace FireflyIII\Models;
 
+use Carbon\Carbon;
 use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
 
 /**
  * Class BudgetLimit.
+ *
+ * @property Budget $budget
+ * @property int    $id
+ * @property Carbon $created_at
+ * @property Carbon $updated_at
+ * @property Carbon $start_date
+ * @property Carbon $end_date
+ * @property string $amount
  */
 class BudgetLimit extends Model
 {
@@ -67,20 +77,10 @@ class BudgetLimit extends Model
 
     /**
      * @codeCoverageIgnore
-     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
+     * @return BelongsTo
      */
-    public function budget()
+    public function budget(): BelongsTo
     {
         return $this->belongsTo(Budget::class);
     }
-
-    /**
-     * @codeCoverageIgnore
-     *
-     * @param $value
-     */
-    public function setAmountAttribute($value)
-    {
-        $this->attributes['amount'] = (string)round($value, 12);
-    }
 }