JSBlock literals = primaryExpressions.block();
literals.expression(codeModel._null());
literals.expression(codeModel._boolean(true));
literals.expression(codeModel._boolean(false));
literals.expression(codeModel.integer(-1L));
literals.expression(codeModel.integer(0L));
literals.expression(codeModel.integer(1L));
literals.expression(codeModel.decimal("-1.1"));
literals.expression(codeModel.decimal("0.0"));
literals.expression(codeModel.decimal("1.1"));
literals.expression(codeModel.string("a"));