"""
variable :: String -> <ReadGraph> Variable
+ @JavaName getPossibleVariable
+ possibleResourceVariable :: Resource -> <ReadGraph> Maybe Variable
+
@JavaName getPossibleVariable
possibleVariable :: String -> <ReadGraph> Maybe Variable
instance Browsable Variable where
fromUri = variable
uriOf = uri
+ possibleUriOf v = Just (uri v)
nameOf = name
possibleNameOf v = Just (name v)
children v = collectionToList (children_ v)