code: public static List<String> splitToList(final String value) {
          if (!StringUtils.isEmpty(value)) {
              return COMMA_SPLITTER.splitToList(value);
          }
          return Collections.<String> emptyList();
      }
docs: Parses a comma-separated string and returns a list of String values.
  
  @param value
  comma-separated string
  @return list of String values