{"ast_node_type":"import","tokens":[{"end":63,"kind":"keyword","start":0,"text":"#[must_use"}]}
#[must_use = "if unused the FreezeLock may immediately unlock"]
/// A guard holding mutable access to a `FreezeLock` which is in a locked state or frozen.
pub struct FreezeWriteGuard<'a, T: ?Sized> {