private boolean isSuppressedAt(RncElement location) {
    PsiElement prev = location.getPrevSibling();
    while (prev instanceof PsiWhiteSpace || prev instanceof PsiComment) {
      if (prev instanceof PsiComment) {
        @NonNls String text = prev.getText();
        if (text.matches("\n*#\\s*suppress\\s.+") && (text.contains(getID()) || "ALL".equals(text))) return true;
      }
      prev = prev.getPrevSibling();
    }
    return false;
  }
private boolean isSuppressedAt(RncElement location)