The spec for this action:
https://www.adobe.com/content/dam/acom/en/devnet/pdf/pdfs/PDF32000_2008.pdf#G11.2111850
An example of a form using this action:
https://www2.illinois.gov/rev/forms/reg/Documents/reg-1-mr.pdf
const destDict = params.destDict;
    if (!isDict(destDict)) {
      warn("parseDestDictionary: `destDict` must be a dictionary.");
      return;
    }
    const resultObj = params.resultObj;
    if (typeof resultObj !== "object") {
      warn("parseDestDictionary: `resultObj` must be an object.");
      return;
    }
    const docBaseUrl = params.docBaseUrl || null;
    let action = destDict.get("A"),
      url,
      dest;
    if (!isDict(action)) {
      if (destDict.has("Dest")) {
        
        
        action = destDict.get("Dest");
      } else {
        action = destDict.get("AA");
        if (isDict(action)) {
          if (action.has("D")) {
            
            action = action.get("D");
          } else if (action.has("U")) {