syntax_data: {"ast_node_type":"other","tokens":[{"end":32,"kind":"keyword","start":0,"text":"Iter::Item:"}]}
source_snippet:     Iter::Item: TypeFoldable<I>,
context_before:     Iter::IntoIter: ExactSizeIterator,
context_after:     A: SliceLike<Item = I::GenericArg>,