syntax_data: {"ast_node_type":"other","tokens":[{"end":16,"kind":"keyword","start":0,"text":"MetadataDSA,"}]}
source_snippet:     MetadataDSA,
context_before: pub enum VtblSegment<'tcx> {
context_after:     TraitOwnEntries { trait_ref: ty::TraitRef<'tcx>, emit_vptr: bool },