Static
This function will only verify the code (not consume it), and: NOT create a new user if it doesn't exist NOT verify the user email if it exists NOT do any linking NOT delete the code unless it returned RESTART_FLOW_ERROR
This function will only verify the code (not consume it), and: NOT create a new user if it doesn't exist NOT verify the user email if it exists NOT do any linking NOT delete the code unless it returned RESTART_FLOW_ERROR