feature RK_AppKit, produces aliased parameters

Compiling with feature `RK_AppKit`

Produces
```rust
pub fn renameFontCollectionWithName_visibility_toName_error_(
         name: &NSString,
         visibility: NSFontCollectionVisibility,
         name: &NSString,
         error: Option<&mut &Option<Arc<NSError>>>,
     ) -> bool {
```

Resulting in
```error[E0415]: identifier `name` is bound more than once in this parameter list```
