code: public login login() throws Exception
  	{
  		login login_obj = new login();
  		login_obj.set_username(this.user_name);
  		login_obj.set_password(this.password);
  		login_obj.set_session_timeout(this.timeout);
  		
  		login result = login.add(this, login_obj);
  		sessionid = result.get_sessionid();
  		
  		return result;
  	}
docs: <pre>
  Use this API to login into NetScaler SDX.
  @return status of the operation performed.
  @throws nitro_exception nitro exception is thrown.
  </pre>