code: public static boolean containsWordIgnoreCase(final String text, final String word) {
  
      if (text == null || word == null) {
        return false;
      }
      return containsWord(text.toLowerCase(), word.toLowerCase());
    }
docs: Returns true if given text contains given word ignore case; false
  otherwise.
  
  @param text string text to be tested.
  @param word string word to be tested.
  @return true if given text contains given word ignore case; false
  otherwise.