Function yrs::yundo_manager_observe_added

source ยท 
#[no_mangle]
pub unsafe extern "C" fn yundo_manager_observe_added(
    mgr: *mut YUndoManager,
    state: *mut c_void,
    cb: extern "C" fn(_: *mut c_void, _: *const YUndoEvent)
) -> *mut Subscription