JsonLoginAuthenticator example

public function getMessageKey(): string
            {
                return 'Session locked after %failed_attempts% failed attempts.';
            }
        });

        $this->assertSame(['error' => 'Session locked after 3 failed attempts.'], json_decode($response->getContent(), true));
    }

    private function setUpAuthenticator(array $options = [])
    {
        $this->authenticator = new JsonLoginAuthenticator(new HttpUtils(), $this->userProvider, null, null, $options);
    }
}