static boolean multi_tuple_assignment(PsiBuilder b, int l) {
    if (!recursion_guard_(b, l, "multi_tuple_assignment")) return false;
    if (!nextTokenIsFast(b, T_LPAREN)) return false;
    boolean r, p;
    Marker m = enter_section_(b, l, _NONE_);
    r = tuple(b, l + 1);
    r = r && mb_nl(b, l + 1);
    r = r && multi_tuple_assignment_2(b, l + 1);
    p = r; // pin = 3
    r = r && tuple_initializer(b, l + 1);
    exit_section_(b, l, m, r, p, null);
    return r || p;
  }
static boolean multi_tuple_assignment(PsiBuilder b, int l)