syntax_data: {"ast_node_type":"variable","tokens":[{"end":99,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:             let has_entries = has_own_existential_vtable_entries(tcx, inner_most_trait_ref.def_id);
context_before:         while let Some((inner_most_trait_ref, emit_vptr, mut siblings)) = stack.pop() {