Update Outlet model docblocks

app/Outlet.php

@@ -7,14 +7,29 @@ use Illuminate\Database\Eloquent\Model;
 
 class Outlet extends Model
 {
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array
+     */
     protected $fillable = [
         'name', 'address', 'latitude', 'longitude', 'creator_id',
     ];
 
+    /**
+     * The accessors to append to the model's array form.
+     *
+     * @var array
+     */
     public $appends = [
         'coordinate', 'map_popup_content',
     ];
 
+    /**
+     * Get outlet name_link attribute.
+     *
+     * @return string
+     */
     public function getNameLinkAttribute()
     {
         $title = __('app.show_detail_title', [
@@ -28,11 +43,21 @@ class Outlet extends Model
         return $link;
     }
 
+    /**
+     * Outlet belongs to User model relation.
+     *
+     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
+     */
     public function creator()
     {
         return $this->belongsTo(User::class);
     }
 
+    /**
+     * Get outlet coordinate attribute.
+     *
+     * @return string|null
+     */
     public function getCoordinateAttribute()
     {
         if ($this->latitude && $this->longitude) {
@@ -40,6 +65,11 @@ class Outlet extends Model
         }
     }
 
+    /**
+     * Get outlet map_popup_content attribute.
+     *
+     * @return string
+     */
     public function getMapPopupContentAttribute()
     {
         $mapPopupContent = '';