public function testActivateUserAccount()
 {
     $token = $this->manager->activateUserAccount('ibfnf5g6sd1f3f');
     $this->assertInstanceOf(UsernamePasswordToken::class, $token);
     $this->assertCount(2, $token->getRoles());
     $this->assertTrue($token->isAuthenticated());
     $this->assertEquals('John Doe', $token->getUsername());
 }