code: public String instantiate(String... keysAndValues) {
      ImmutableMap.Builder<String, String> builder = ImmutableMap.builder();
      for (int i = 0; i < keysAndValues.length; i += 2) {
        builder.put(keysAndValues[i], keysAndValues[i + 1]);
      }
      return instantiate(builder.build());
    }
docs: Shortcut for {@link #instantiate(Map)} with a vararg parameter for keys and values.