WSLink
WSRowObject > WSLink
A link object i.e. a WSRowObject with a category type link.
Methods:
ds_node
#ds_node ⇒ WSNode?
EXCHANGE, UI
Returns the link's downstream node, or nil if it doesn't have one.
us_node
#us_node ⇒ WSNode?
EXCHANGE, UI
Returns the link's upstream node, or nil if it doesn't have one.
