if (obj==null)
return false;
if (!(obj instanceof ContentId))
return false;
final ContentId other = (ContentId) obj;
<BUG>if (this.id==null) {
if (other.id!=null)
return false;
} else if (!this.id.equals(other.id))
return false;</BUG>
return true;

if (obj==null)
return false;
if (!(obj instanceof ContentId))
return false;
final ContentId other = (ContentId) obj;
if (!this.id.equals(other.id))
return false;
return true;
