public static Aead newAead(String keyPath, Logical vaultApi) throws GeneralSecurityException {
    return new HcVaultAead(keyPath, vaultApi);
  }
A {@link Aead} that forwards encryption/decryption requests to a key in <a
href="https://www.vaultproject.io/">Hashicorp Vault</a>.
java_src/src/main/java/com/google/crypto/tink/integration/hcvault/HcVaultAead.java