syntax_data: {"ast_node_type":"other","tokens":[{"end":85,"kind":"keyword","start":0,"text":"tcx.own_existential_vtable_entries(existential_trait_ref.def_id);"}]}
source_snippet:                     tcx.own_existential_vtable_entries(existential_trait_ref.def_id);
context_before:                 let own_existential_entries =