syntax_data: {"ast_node_type":"other","tokens":[{"end":53,"kind":"keyword","start":0,"text":"prev_entries:"}]}
source_snippet:         prev_entries: Self::OpaqueTypeStorageEntries,
context_before:         &self,
context_after:     ) -> Vec<(ty::OpaqueTypeKey<Self::Interner>, <Self::Interner as Interner>::Ty)>;