syntax_data: {"ast_node_type":"other","tokens":[{"end":60,"kind":"keyword","start":0,"text":"GenericParamDefKind::Type"}]}
source_snippet:                             GenericParamDefKind::Type { .. }
context_before:                             GenericParamDefKind::Lifetime => tcx.lifetimes.re_erased.into(),
context_after:                             | GenericParamDefKind::Const { .. } => {