private static Set<Sentence> genProjection(Sort sort, Module m) { KLabel lbl = getProjectLbl(sort, m); KVariable var = KVariable("K", Att.empty().add(Sort.class, sort)); Rule r = Rule(KRewrite(KApply(lbl, var), var), BooleanUtils.TRUE, BooleanUtils.TRUE, Att().add("projection")); if (m.definedKLabels().contains(lbl)) { return Set(r); } return Set(Production(lbl, sort, Seq(Terminal(lbl.name()), Terminal("("), NonTerminal(Sorts.K()), Terminal(")")), Att().add("function").add("projection")), r); }