impl<T> Mutex<T> {
    pub fn get_cloned(&self) -> Result<T, PoisonError<()>> where T: Clone { ... }
    pub fn set(&self, value: T) -> Result<(), PoisonError<T>> { ... }
    pub fn replace(&self, value: T) -> LockResult<T> { ... }
}

impl<T> RwLock<T> {
    pub fn get_cloned(&self) -> Result<T, PoisonError<()>> where T: Clone { ... }
    pub fn set(&self, value: T) -> Result<(), PoisonError<T>> { ... }
    pub fn replace(&self, value: T) -> LockResult<T> { ... }
}

impl<T> nonpoison::Mutex<T>
where
    T: ?Sized
{
    pub fn with_mut<F, R>(&self, f: F) -> R where F: FnOnce(&mut T) -> R { ... }
}

impl<T> nonpoison::RwLock<T>
where
    T: ?Sized
{
    pub fn with<F, R>(&self, f: F) -> R where F: FnOnce(&T) -> R { ... }
    pub fn with_mut<F, R>(&self, f: F) -> R where F: FnOnce(&mut T) -> R { ... }
}