/**
* return the next logical step corresponding to the user's last submitted action. You should only call this after
* you have successfully captured all the information from the last step and are ready to move on to the next step. You
* would use the return value to set the current step prior to continuing.
*
* @return {nlobjAssistantStep}
*
* @method
* @memberOf nlobjAssistant
*
* @since 2009.2
*/