public void InsertNegativeWordIntoDatastore(string word)
 {
     if (string.IsNullOrWhiteSpace(word))
     {
         throw new ArgumentException("Negative word cannot be empty");
     }
     NegativeWordsList.Add(word);
 }
 public string[] RetrieveNegativeWordsFromDatastore()
 {
     return(NegativeWordsList.ToArray());
 }