Various code cleanup.

app/Models/Preference.php

@@ -29,6 +29,7 @@ use FireflyIII\Exceptions\FireflyException;
 use FireflyIII\User;
 use Illuminate\Contracts\Encryption\DecryptException;
 use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Log;
 use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
 
@@ -55,14 +56,16 @@ class Preference extends Model
             'updated_at' => 'datetime',
         ];
 
-    /** @var array */
+    /** @var array Fields that can be filled */
     protected $fillable = ['user_id', 'data', 'name'];
 
     /**
+     * Route binder. Converts the key in the URL to the specified object (or throw 404).
+     *
      * @param string $value
      *
      * @return Preference
-     * @throws \Symfony\Component\HttpKernel\Exception\NotFoundHttpException
+     * @throws NotFoundHttpException
      */
     public static function routeBinder(string $value): Preference
     {
@@ -129,9 +132,9 @@ class Preference extends Model
 
     /**
      * @codeCoverageIgnore
-     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
+     * @return BelongsTo
      */
-    public function user(): \Illuminate\Database\Eloquent\Relations\BelongsTo
+    public function user(): BelongsTo
     {
         return $this->belongsTo(User::class);
     }