@Override
  public KmsClient withCredentials(String credentialPath) throws GeneralSecurityException {
    return this;
  }
@return true either if this client is a generic one and uri starts with {@link
    FakeKmsClient#PREFIX}, or the client is a specific one that is bound to the key identified
    by {@code uri}.
java_src/src/main/java/com/google/crypto/tink/testing/FakeKmsClient.java