code: public static char getFirstChar (@Nullable final CharSequence aCS)
    {
      return hasText (aCS) ? aCS.charAt (0) : CGlobal.ILLEGAL_CHAR;
    }
docs: Get the first character of the passed character sequence
  
  @param aCS
  The source character sequence
  @return {@link CGlobal#ILLEGAL_CHAR} if the passed sequence was empty