/// <summary>
 /// Gets dictionary entry if it exists. Otherwise, adds to unknown dictionary, then gets.
 /// </summary>
 private void GetDictionaryEntry()
 {
     if (GlobalSettings.CharacteristicDictionaryConstant.ContainsKey(Uuid))
     {
         _dictionaryEntry = GlobalSettings.CharacteristicDictionaryConstant[Uuid];
     }
     else if (GlobalSettings.CharacteristicDictionaryUnknown.ContainsKey(Uuid))
     {
         _dictionaryEntry = GlobalSettings.CharacteristicDictionaryUnknown[Uuid];
     }
     else
     {
         _dictionaryEntry = new CharacteristicDictionaryEntry();
         _dictionaryEntry.Initialize(Uuid);
         GlobalSettings.CharacteristicDictionaryUnknown.Add(Uuid, _dictionaryEntry);
     }
 }