final Hashtable<String, String> env = new Hashtable<>();
        putEnv(env, Context.INITIAL_CONTEXT_FACTORY, initialContextFactory);
        putEnv(env, Context.SECURITY_AUTHENTICATION, securityAuthentication);
        putEnv(env, Context.PROVIDER_URL, providerUrl);
        putEnv(env, Context.SECURITY_PRINCIPAL, principal);
        putEnv(env, Context.SECURITY_CREDENTIALS, credntials);

    public Hasher putShort(short s) {
      ensureCapacity(Short.BYTES);
      buffer.putShort(s);
      return this;
    }

    @Override
    public Hasher putInt(int i) {
      ensureCapacity(Integer.BYTES);
      buffer.putInt(i);
      return this;
    }

    @Override
    public Hasher putLong(long l) {
      ensureCapacity(Long.BYTES);
      buffer.putLong(l);
      return this;