syntax_data: {"ast_node_type":"other","tokens":[{"end":54,"kind":"keyword","start":0,"text":"Res::Def(DefKind::Variant,"}]}
source_snippet:                 Res::Def(DefKind::Variant, variant_id)
context_before:                 let variant_id = self.tcx.parent(variant_ctor_id);
context_after:             }