syntax_data: {"ast_node_type":"other","tokens":[{"end":49,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // am looking forward to the future here.
context_before:         // Note: in fact we only permit builtin traits, not `Bar<'d>`, I
context_after:         if !data.has_escaping_bound_vars() && !region.has_escaping_bound_vars() {