cleaning day

app/Models/Shop/InvoicePayment.php

@@ -3,8 +3,10 @@
 namespace App\Models\Shop;
 
 use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Venturecraft\Revisionable\RevisionableTrait;
 use Wildside\Userstamps\Userstamps;
+use Znck\Eloquent\Relations\BelongsToThrough;
 
 class InvoicePayment extends Model
 {
@@ -14,12 +16,12 @@ class InvoicePayment extends Model
 
     protected $table = 'shop_invoice_payments';
 
-    public function invoice()
+    public function invoice(): BelongsTo
     {
         return $this->belongsTo(Invoice::class);
     }
 
-    public function order()
+    public function order(): BelongsToThrough
     {
         return $this->belongsToThrough(Order::class, Invoice::class);
     }