make static-analyse code

app/Models/UserAttachment.php

@@ -4,6 +4,9 @@ namespace App\Models;
 
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 
 /**
  * App\Models\UserAttachment
@@ -44,17 +47,17 @@ class UserAttachment extends Model
 
     protected $guarded = [];
 
-    public function user()
+    public function user(): BelongsTo
     {
         return $this->belongsTo(User::class);
     }
 
-    public function scopeCerts($query)
+    public function scopeCerts(Builder $query): Builder
     {
         return $query->where('user_attachments.group', 'user_certs');
     }
 
-    public function meals()
+    public function meals(): BelongsToMany
     {
         return $this->belongsToMany(Meal::class);
     }