syntax_data: {"ast_node_type":"other","tokens":[{"end":11,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// ```
context_before:     /// let b: Canonical<I, (T, Ty<I>)> = a.unchecked_map(|v| (v, ty));
context_after:     pub fn unchecked_map<W>(self, map_op: impl FnOnce(V) -> W) -> Canonical<I, W> {