Inserts a new row after sibling. If sibling is null, then the row will be
prepended to the beginning of the list. iter will be changed to point to
this new row. The row will be empty after this function is called. To fill
in values, you need to call gtk.list_store.ListStore.set or gtk.list_store.ListStore.setValue.
Inserts a new row after sibling. If sibling is null, then the row will be prepended to the beginning of the list. iter will be changed to point to this new row. The row will be empty after this function is called. To fill in values, you need to call gtk.list_store.ListStore.set or gtk.list_store.ListStore.setValue.