public static long GetLongOrDefault(this PdfDictionary dictionary, CosName key)
 {
     return(dictionary.GetLongOrDefault(key, -1L));
 }
 public static long GetLongOrDefault(this PdfDictionary dictionary, string key, long defaultValue)
 {
     return(dictionary.GetLongOrDefault(CosName.Create(key), defaultValue));
 }