public static UFreeIdent create(CharSequence identifier) {
    return new AutoValue_UFreeIdent(StringName.of(identifier));
  }
@Test
  public void inlinesExpression() {
    bind(new UFreeIdent.Key("foo"), parseExpression("\"abcdefg\".charAt(x + 1)"));
    assertInlines(
        parseExpression("\"abcdefg\".charAt(x + 1)").toString(), UFreeIdent.create("foo"));
  }