diff --git a/src/osx/subclass.rs b/src/osx/subclass.rs
line changes: +0/-81
index aa814ff..0000000
--- a/src/osx/subclass.rs
+++ /dev/null

@@ -1,81 +0,0 @@
-// Copied from rustc-objc-foundation project by SSheldon, examples/custom_class.rs
-// https://github.com/SSheldon/rust-objc-foundation/blob/master/examples/custom_class.rs
-// Covered by MIT License: https://en.wikipedia.org/wiki/MIT_License
-
-#[macro_use]
-extern crate objc;
-extern crate objc_foundation;
-
-use std::sync::{Once, ONCE_INIT};
-
-use objc::Message;
-use objc::declare::ClassDecl;
-use objc::runtime::{Class, Object, Sel};
-use objc_foundation::{INSObject, NSObject};
-
-pub enum RustNSObject { }
-
-impl RustNSObject {
-    fn number(&self) -> u32 {
-        unsafe {
-            let obj = &*(self as *const _ as *const Object);
-            *obj.get_ivar("_number")
-        }
-    }
-
-    fn set_number(&mut self, number: u32) {
-        unsafe {
-            let obj =  &mut *(self as *mut _ as *mut Object);
-            obj.set_ivar("_number", number);
-        }
-    }
-}
-
-unsafe impl Message for RustNSObject { }
-
-static RUSTNSOBJECT_REGISTER_CLASS: Once = ONCE_INIT;
-
-impl INSObject for RustNSObject {
-    fn class() -> &'static Class {
-        RUSTNSOBJECT_REGISTER_CLASS.call_once(|| {
-            let superclass = NSObject::class();
-            let mut decl = ClassDecl::new("RustNSObject", superclass).unwrap();
-            decl.add_ivar::<u32>("_number");
-
-            // Add ObjC methods for getting and setting the number
-            extern fn my_object_set_number(this: &mut Object, _cmd: Sel, number: u32) {
-                unsafe { this.set_ivar("_number", number); }
-            }
-
-            extern fn my_object_get_number(this: &Object, _cmd: Sel) -> u32 {
-                unsafe { *this.get_ivar("_number") }
-            }
-
-            unsafe {
-                let set_number: extern fn(&mut Object, Sel, u32) = my_object_set_number;
-                decl.add_method(sel!(setNumber:), set_number);
-                let get_number: extern fn(&Object, Sel) -> u32 = my_object_get_number;
-                decl.add_method(sel!(number), get_number);
-            }
-
-            decl.register();
-        });
-
-        Class::get("RustNSObject").unwrap()
-    }
-}
-
-fn main() {
-    let mut obj = RustNSObject::new();
-
-    obj.set_number(7);
-    println!("Number: {}", unsafe {
-        let number: u32 = msg_send![obj, number];
-        number
-    });
-
-    unsafe {
-        let _: () = msg_send![obj, setNumber:12u32];
-    }
-    println!("Number: {}", obj.number());
-}