{"ast_node_type":"other","tokens":[{"end":96,"kind":"keyword","start":0,"text":"assert_eq!(input_len,"}]}
                assert_eq!(input_len, dest_len, "Return vector length must match input length");
                let (dest, dest_len) = self.project_to_simd(dest)?;
                // Bounds are not checked by typeck so we have to do it ourselves.