JavaDoc for string prefence fields with empty default value seems incomplete #1877

if (defaultValueStr != null) {
    fieldMethod.javadoc().append("<p><b>Defaults to</b>: " + defaultValueStr + "</p>\n");
}

@SharedPref
public interface PreferencesInterface {
    // also works with @DefaultString("")
    // will generate "<p><b>Defaults to</b>: </p>"
   String stringField();

   // will generate "<p><b>Defaults to</b>: not empty</p>"
   @DefaultString("not empty")
   String anotherStringField();
}

<p><b>Defaults to</b>: `" + defaultValueStr + "`</p>\n

for empty strings:
  <p><b>Defaults to</b>: ``</p>
for @DefaultString("non-empty")
  <p><b>Defaults to</b>: `non-empty`</p>
for an int field as non-String example
  <p><b>Defaults to</b>: `0`</p>