public static boolean pathExpression(PsiBuilder b, int l) {
    if (!recursion_guard_(b, l, "pathExpression")) return false;
    boolean r;
    Marker m = enter_section_(b, l, _NONE_, PATH_EXPRESSION, "<path expression>");
    r = head_(b, l + 1);
    r = r && pathExpression_1(b, l + 1);
    exit_section_(b, l, m, r, false, null);
    return r;
  }
public static boolean pathExpression(PsiBuilder b, int l)