Create a new network instance, and return its handle.

Return value
	type	description
	network	reference to the newly created object
Parameters
name	type	description
session_id	session	valid session reference
name_label	string	a human-readable name
name_description	string	a notes field containg human-readable description
MTU	int	MTU in octets
other_config	Map[string,string]	additional configuration
tags	Set[string]	user-specified tags for categorization purposes
Errors
name	arguments	description

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