{"ast_node_type":"variable","tokens":[{"end":85,"kind":"keyword","start":0,"text":"let"}]}
        let prov = self.range_ptrs_get(alloc_range(offset, Size::from_bytes(1)), cx);
    pub fn get(&self, offset: Size, cx: &impl HasDataLayout) -> Option<Prov> {
        debug_assert!(prov.len() <= 1);