- 'vlan': in case of a data or ptp net_type, the intended vlan tag to be used for the network
- Returns the network identifier on success or raises and exception on failure
+ Returns a tuple with the network identifier and created_items, or raises an exception on error
+ created_items can be None or a dictionary where this method can include key-values that will be passed to
+ the method delete_network. Can be used to store created segments, created l2gw connections, etc.
+ Format is vimconnector dependent, but do not use nested dictionaries and a value of None should be the same
+ as not present.