code: public static ImmutableList<Symbol> listFrom(final Iterable<String> strings) {
      checkNotNull(strings);
      return FluentIterable.from(strings)
          .transform(Symbolize)
          .toList();
    }
docs: Creates a <code>List</code> of Symbols from some strings. The returned <code>List</code> is
  immutable.
  
  @param strings No string may be null.