return false;
    }
    List<?> otherList = (List<?>) other;
    int size = thisList.size();
    if (size != otherList.size()) {
      return false;
    }
    if (thisList instanceof RandomAccess && otherList instanceof RandomAccess) {
      // avoid allocation and use the faster loop
      for (int i = 0; i < size; i++) {
        if (!Objects.equals(thisList.get(i), otherList.get(i))) {
          return false;

	existingRoot := d.root()
	otherRoot := other.root()
	if existingRoot == nil && otherRoot == nil {
		return
	}
	if otherRoot == nil {
		return
	}
	if existingRoot == nil {
		*d = other.clone()
		return
	}
	if other.Info.LastUpdate.After(d.Info.LastUpdate) {
		d.Info.LastUpdate = other.Info.LastUpdate
	}
	existingRoot.merge(*otherRoot)
	eHash := d.rootHash()

        RobotsTxt robotsTxt = new RobotsTxt();

        Directive directive = new Directive("MyBot");
        robotsTxt.addDirective(directive);

        Directive retrieved = robotsTxt.getDirective("OtherBot");
        assertNull(retrieved);
    }

    public void test_getDirectiveWithNull() {
        // Test getDirective with null user agent
        RobotsTxt robotsTxt = new RobotsTxt();