syntax_data: {"ast_node_type":"other","tokens":[{"end":47,"kind":"keyword","start":0,"text":"true"}]}
source_snippet:                 true => write!(p, "{self:?}")?,
context_before:             ty::BoundTyKind::Param(def_id) => match p.should_print_verbose() {
context_after:                 false => write!(p, "{}", p.tcx().item_name(def_id))?,