Attach (recommended) or Link to PDF file here:
issue13500 (in test corpus)

This regressed when landing #13566. 

What is the expected behavior? (add screenshot)
<img width="664" alt="image" src="https://user-images.githubusercontent.com/942640/122467522-7bc8aa80-cf6f-11eb-9d4d-311eb7c64fb2.png">


What went wrong? (add screenshot)
![image](https://user-images.githubusercontent.com/942640/122467565-85eaa900-cf6f-11eb-9c10-8a8686ed440c.png)


constructor(attributes) {
    super(TEMPLATE_NS_ID, "defaultUi",  true);
    this.id = attributes.id || "";
    this.use = attributes.use || "";
    this.usehref = attributes.usehref || "";
    this.extras = null;
  }
}
class Desc extends XFAObject {
  constructor(attributes) {
    super(TEMPLATE_NS_ID, "desc",  true);
    this.id = attributes.id || "";
    this.use = attributes.use || "";
    this.usehref = attributes.usehref || "";
    this.boolean = new XFAObjectArray();
    this.date = new XFAObjectArray();
    this.dateTime = new XFAObjectArray();
    this.decimal = new XFAObjectArray();
    this.exData = new XFAObjectArray();
    this.float = new XFAObjectArray();
    this.image = new XFAObjectArray();
    this.integer = new XFAObjectArray();
    this.text = new XFAObjectArray();
    this.time = new XFAObjectArray();
  }
}
class DigestMethod extends OptionObject {