boolean (PsiBuilder b, int l, Parser _something) { if (!recursion_guard_(b, l, "mb_nl_group")) return false; boolean r; Marker m = enter_section_(b); r = _something.parse(b, l); if (!r) r = withProtectedLastVariantPos(b, l + 1, mb_nl_group_1_0_$(_something)); exit_section_(b, m, null, r); return r; }