/**
  * {@inheritdoc}
  */
 public function invalidUserProvider()
 {
     return array_merge(parent::invalidUserProvider(), ['change nickname to other user' => [$this->createSampleUserForRequest('Arek', 'Moskwa', 'baddude'), file_get_contents(__DIR__ . '/responses/unique_nickname.json')]]);
 }
 /**
  * {@inheritdoc}
  */
 public function invalidUserProvider()
 {
     return array_merge(parent::invalidUserProvider(), ['unique nickname' => [$this->createSampleUserForRequest('Test', 'User', 'Nakard'), file_get_contents(__DIR__ . '/responses/unique_nickname.json')]]);
 }