syntax_data: {"ast_node_type":"function","tokens":[{"end":56,"kind":"keyword","start":0,"text":"fn"}]}
source_snippet:     fn has_type_flags(&self, flags: TypeFlags) -> bool {
context_before: impl<I: Interner, T: TypeVisitable<I>> TypeVisitableExt<I> for T {
context_after:         let res =