code: public SecretBundle getSecret(String secretIdentifier) {
          SecretIdentifier id = new SecretIdentifier(secretIdentifier);
          return getSecret(id.vault(), id.name(), id.version() == null ? "" : id.version());
      }
docs: Get a specified secret from a given key vault.
  
  @param secretIdentifier
  The URL for the secret.
  @return the SecretBundle if successful.