108     type Output = usize;  typedef
110     fn index(&self, index: VmFlags) -> &Self::Output {  in index()  argument
116     fn index_mut(&mut self, index: VmFlags) -> &mut Self::Output {  in index_mut()  argument
202     type Output = Self;  typedef
205     fn add(self, rhs: usize) -> Self::Output {  in add()  argument
218     type Output = Self;  typedef
221     fn add(self, rhs: PhysAddr) -> Self::Output {  in add()  argument
248     type Output = Self;  typedef
251     fn sub(self, rhs: usize) -> Self::Output {  in sub()  argument
264     type Output = usize;  typedef
267     fn sub(self, rhs: PhysAddr) -> Self::Output {  in sub()  argument
330     type Output = Self;  typedef
333     fn add(self, rhs: VirtAddr) -> Self::Output {  in add()  argument
339     type Output = Self;  typedef
342     fn add(self, rhs: usize) -> Self::Output {  in add()  argument
348     type Output = usize;  typedef
351     fn sub(self, rhs: VirtAddr) -> Self::Output {  in sub()  argument
357     type Output = Self;  typedef
360     fn sub(self, rhs: usize) -> Self::Output {  in sub()  argument