/**
  * @test
  */
 public function shutdownSavesKeysToKeystoreFileIfKeysWereModified()
 {
     $this->assertFalse(file_exists('vfs://Foo/EncryptionKey'));
     $keyPairUuid = $this->rsaWalletService->generateNewKeypair(TRUE);
     $this->rsaWalletService->shutdownObject();
     $this->assertTrue(file_exists('vfs://Foo/EncryptionKey'));
     $this->rsaWalletService->destroyKeypair($keyPairUuid);
     $this->rsaWalletService->initializeObject();
     $this->rsaWalletService->getPublicKey($keyPairUuid);
 }