syntax_data: {"ast_node_type":"other","tokens":[{"end":20,"kind":"keyword","start":0,"text":"match"}]}
source_snippet:         match self {
context_before:     pub fn fn_sig(self, interner: I) -> ty::Binder<I, ty::FnSig<I>> {
context_after:             ty::FnPtr(sig_tys, hdr) => sig_tys.with(hdr),