/// use std::cell::RefCell;
///
/// async fn foo(x: &RefCell<u32>) {
- /// let b = x.borrow_mut()();
- /// *ref += 1;
+ /// let mut y = x.borrow_mut();
+ /// *y += 1;
/// bar.await;
/// }
/// ```
///
/// async fn foo(x: &RefCell<u32>) {
/// {
- /// let b = x.borrow_mut();
- /// *ref += 1;
+ /// let mut y = x.borrow_mut();
+ /// *y += 1;
/// }
/// bar.await;
/// }