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, "filter",  true);
    this.addRevocationInfo = getStringOption(attributes.addRevocationInfo, [
      "",
      "required",
      "optional",
      "none",
    ]);
    this.id = attributes.id || "";
    this.name = attributes.name || "";
    this.use = attributes.use || "";
    this.usehref = attributes.usehref || "";
    this.version = getInteger({
      data: this.version,
      defaultValue: 5,
      validate: x => x >= 1 && x <= 5,
    });
    this.appearanceFilter = null;
    this.certificates = null;
    this.digestMethods = null;
    this.encodings = null;
    this.encryptionMethods = null;
    this.handler = null;
    this.lockDocument = null;
    this.mdp = null;
    this.reasons = null;
    this.timeStamp = null;
  }
}
class Float extends ContentObject {