Create a new user instance, and return its handle.

Return value
	type	description
	user	reference to the newly created object
Parameters
name	type	description
session_id	session	valid session reference
short_name	string	short name (e.g. userid)
fullname	string	full name
other_config	Map[string,string]	additional configuration
Errors
name	arguments	description

• Warning: Message is deprecated
• Message has both a synchronous and asynchronous version
• This is an implicit message, derived from its class