@Override
  @RequiresApi(23)
  public KmsClient withCredentials(String unused) throws GeneralSecurityException {
    return new AndroidKeystoreKmsClient();
  }
Initializes a {@link KmsClient} for Android Keystore.

<p>Note that Android Keystore doesn't need credentials, thus the credential path is unused.
java_src/src/main/java/com/google/crypto/tink/integration/android/AndroidKeystoreKmsClient.java