{"ast_node_type":"other","tokens":[{"end":84,"kind":"keyword","start":0,"text":"(ty::ClosureKind::Fn"}]}
        (ty::ClosureKind::Fn | ty::ClosureKind::FnMut, ty::ClosureKind::FnOnce) => {
        }
            // The closure fn is a `fn(&self, ...)` or `fn(&mut self, ...)`, but