syntax_data: {"ast_node_type":"other","tokens":[{"end":39,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:                 // Don't truncate `()`.
context_before:             ty::Tuple(tys) if tys.len() == 0 && self.should_truncate() => {
context_after:                 self.printed_type_count += 1;