syntax_data: {"ast_node_type":"function","tokens":[{"end":84,"kind":"keyword","start":0,"text":"fn"}]}
source_snippet:     fn variant_range(&self, def_id: DefId, tcx: TyCtxt<'tcx>) -> Range<VariantIdx> {
context_before:     #[inline]
context_after:         // FIXME requires optimized MIR