It looks like some merge cruft ended up in master, as the type() method was renamed to _type() to not conflict with columns of the same name.
Created attachment 57341 [details] [review]
Bug 17589 - Improper method type in Koha::ItemType(s)
Signed-off-by: Kyle M Hall <email@example.com>
Pushed to master for 16.11, simple fix with Jonathan's blessing ; )
Pushed to 16.05.x, for 16.05.06 release