code: public MFAToken generateMFAToken(long userId,Integer expiresIn) throws OAuthSystemException, OAuthProblemException, URISyntaxException {
  		return generateMFAToken(userId, expiresIn, false);
  	}
docs: Generates an access token for a user
  
  @param userId
  Id of the user
  @param expiresIn
  Set the duration of the token in seconds. (default: 259200 seconds = 72h)
  72 hours is the max value.
  
  @return Created MFAToken
  
  @throws OAuthSystemException - if there is a IOException reading parameters of the httpURLConnection
  @throws OAuthProblemException - if there are errors validating the OneloginOAuthJSONResourceResponse and throwOAuthProblemException is enabled
  @throws URISyntaxException - if there is an error when generating the target URL at the URIBuilder constructor
  
  @see <a target="_blank" href="https://developers.onelogin.com/api-docs/1/multi-factor-authentication/generate-mfa-token">Generate MFA Token documentation</a>