private static boolean isPcreCondition(RegExpBranch branch) {
      if (branch == null) return false;
      if (branch.getParent() instanceof RegExpConditional) {
        RegExpGroup groupCondition = ObjectUtils.tryCast(((RegExpConditional)branch.getParent()).getCondition(), RegExpGroup.class);
        return groupCondition != null && RegExpGroupImpl.isPcreConditionalGroup(groupCondition.getNode());
      }
      return false;
    }
private static boolean isPcreCondition(RegExpBranch branch)