syntax_data: {"ast_node_type":"other","tokens":[{"end":73,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:             if is_virtual_call { None } else { Some(instance.def_id()) },
context_before:             instance.def.requires_caller_location(tcx).then(|| tcx.caller_location_ty()),
context_after:             is_virtual_call,