Advanced app `User` model code style fixes

apps/advanced/common/models/User.php

@@ -141,7 +141,7 @@ class User extends ActiveRecord implements IdentityInterface
      */
     public function validatePassword($password)
     {
-        return Yii::$app->getSecurity()->validatePassword($password, $this->password_hash);
+        return Yii::$app->security->validatePassword($password, $this->password_hash);
     }
 
     /**
@@ -151,7 +151,7 @@ class User extends ActiveRecord implements IdentityInterface
      */
     public function setPassword($password)
     {
-        $this->password_hash = Yii::$app->getSecurity()->generatePasswordHash($password);
+        $this->password_hash = Yii::$app->security->generatePasswordHash($password);
     }
 
     /**
@@ -159,7 +159,7 @@ class User extends ActiveRecord implements IdentityInterface
      */
     public function generateAuthKey()
     {
-        $this->auth_key = Yii::$app->getSecurity()->generateRandomKey();
+        $this->auth_key = Yii::$app->security->generateRandomKey();
     }
 
     /**
@@ -167,7 +167,7 @@ class User extends ActiveRecord implements IdentityInterface
      */
     public function generatePasswordResetToken()
     {
-        $this->password_reset_token = Yii::$app->getSecurity()->generateRandomKey() . '_' . time();
+        $this->password_reset_token = Yii::$app->security->generateRandomKey() . '_' . time();
     }
 
     /**