code: public CoinbaseUser createCoinbaseUser(CoinbaseUser user, final String oAuthClientId)
        throws IOException {
  
      final CoinbaseUser createdUser = coinbase.createUser(user.withoAuthClientId(oAuthClientId));
      return handleResponse(createdUser);
    }
docs: Unauthenticated resource that creates a user with an email and password.
  
  @param user New Coinbase User information.
  @param oAuthClientId Optional client id that corresponds to your OAuth2 application.
  @return Information for the newly created user, including information to perform future OAuth
  requests for the user.
  @throws IOException
  @see <a
  href="https://coinbase.com/api/doc/1.0/users/create.html">coinbase.com/api/doc/1.0/users/create.html</a>
  @see {@link CoinbaseUser#createNewCoinbaseUser} and {@link
  CoinbaseUser#createCoinbaseNewUserWithReferrerId}