bool SkPdfInteractiveFormDictionary::NeedAppearances(SkPdfNativeDoc* doc) {
  SkPdfNativeObject* ret = get("NeedAppearances", "");
  if (doc) {ret = doc->resolveReference(ret);}
  if ((ret != NULL && ret->isBoolean()) || (doc == NULL && ret != NULL && ret->isReference())) return ret->boolValue();
  // TODO(edisonn): warn about missing default value for optional fields
  return false;
}
bool SkPdfSoundActionDictionary::Mix(SkPdfNativeDoc* doc) {
  SkPdfNativeObject* ret = get("Mix", "");
  if (doc) {ret = doc->resolveReference(ret);}
  if ((ret != NULL && ret->isBoolean()) || (doc == NULL && ret != NULL && ret->isReference())) return ret->boolValue();
  // TODO(edisonn): warn about missing default value for optional fields
  return false;
}
bool SkPdfViewerPreferencesDictionary::DisplayDocTitle(SkPdfNativeDoc* doc) {
  SkPdfNativeObject* ret = get("DisplayDocTitle", "");
  if (doc) {ret = doc->resolveReference(ret);}
  if ((ret != NULL && ret->isBoolean()) || (doc == NULL && ret != NULL && ret->isReference())) return ret->boolValue();
  // TODO(edisonn): warn about missing default value for optional fields
  return false;
}