public static boolean operation(PsiBuilder b, int l) {
    if (!recursion_guard_(b, l, "operation")) return false;
    if (!nextTokenIs(b, "<operation>", SEPARATOR, SIGN)) return false;
    boolean r;
    Marker m = enter_section_(b, l, _NONE_, OPERATION, "<operation>");
    r = operation_0(b, l + 1);
    r = r && consumeToken(b, SEPARATOR);
    exit_section_(b, l, m, r, false, null);
    return r;
  }
public static boolean operation(PsiBuilder b, int l)