( since = "0.4.0"
) ]public List
Looks up a list of links by relation type from the list of links in the entry.
If the links have one of the standard Atom relation types, use one of the defined
rel values, instead of a static string. e.g.
LINK_EDIT or LINK_SELF
If you will only use the first link found, consider calling look_up_link
the value of the
rel attribute of the desired links
a List of Links, or
if none were found; free the list with g_list_free