code: public static String normalize( String text ) {
          CheckArg.isNotNull(text, "text");
          // This could be much more efficient.
          return NORMALIZE_PATTERN.matcher(text).replaceAll(" ").trim();
      }
docs: Removes leading and trailing whitespace from the supplied text, and reduces other consecutive whitespace characters to a
  single space. Whitespace includes line-feeds.
  
  @param text the text to be normalized
  @return the normalized text