Create a new subject instance, and return its handle.

Return value
	type	description
	subject	reference to the newly created object
Parameters
name	type	description
session_id	session	valid session reference
subject_identifier	string	the subject identifier, unique in the external directory service
other_config	Map[string,string]	additional configuration
Errors
name	arguments	description

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