687     pub struct Lazy<T, F = fn() -> T> {  struct
692     impl<T, F: RefUnwindSafe> RefUnwindSafe for Lazy<T, F> where OnceCell<T>: RefUnwindSafe {}  implementation
694     impl<T: fmt::Debug, F> fmt::Debug for Lazy<T, F> {  implementation
700     impl<T, F> Lazy<T, F> {  impl
706         /// use once_cell::unsync::Lazy;
731     impl<T, F: FnOnce() -> T> Lazy<T, F> {  implementation
807     impl<T, F: FnOnce() -> T> Deref for Lazy<T, F> {  implementation
814     impl<T, F: FnOnce() -> T> DerefMut for Lazy<T, F> {  implementation
821     impl<T: Default> Default for Lazy<T> {  implementation
1223     pub struct Lazy<T, F = fn() -> T> {  struct
1224         cell: OnceCell<T>,
1225         init: Cell<Option<F>>,
1228     impl<T: fmt::Debug, F> fmt::Debug for Lazy<T, F> {  implementation
1238     unsafe impl<T, F: Send> Sync for Lazy<T, F> where OnceCell<T>: Sync {}  implementation
1241     impl<T, F: RefUnwindSafe> RefUnwindSafe for Lazy<T, F> where OnceCell<T>: RefUnwindSafe {}  implementation
1243     impl<T, F> Lazy<T, F> {  implementation
1262     impl<T, F: FnOnce() -> T> Lazy<T, F> {  implementation
1335     impl<T, F: FnOnce() -> T> Deref for Lazy<T, F> {  implementation
1342     impl<T, F: FnOnce() -> T> DerefMut for Lazy<T, F> {  implementation
1349     impl<T: Default> Default for Lazy<T> {  implementation