syntax_data: {"ast_node_type":"other","tokens":[{"end":6,"kind":"keyword","start":0,"text":")"}]}
source_snippet: ) -> (
context_before:     clauses: impl IntoIterator<Item = (ty::Clause<'tcx>, Span)>,
context_after:     Vec<(ty::PolyTraitPredicate<'tcx>, SmallVec<[Span; 1]>)>,