public CMSSignedData( CMSProcessable  signedContent, ContentInfo     sigData)
private CMSSignedData( CMSSignedData   c)
    public CMSSignedData(        CMSProcessable  signedContent,        ContentInfo     sigData)    {        this.signedContent = signedContent;        this.contentInfo = sigData;        this.signedData = SignedData.getInstance(contentInfo.getContent());    }