syntax_data: {"ast_node_type":"other","tokens":[{"end":68,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// but on an iterator of values that deref to a `TypeFoldable`.
context_before:     /// Similar to [`instantiate_identity`](EarlyBinder::instantiate_identity),
context_after:     pub fn iter_identity_copied(self) -> IterIdentityCopied<Iter> {