Provide a getHasOptionsMenu function

I want to use following functions in a derived controller:

@Override
protected void onChangeStarted(@NonNull ControllerChangeHandler changeHandler, @NonNull ControllerChangeType changeType)
{
super.onChangeStarted(changeHandler, changeType);
if (getHasOptionsMenu())
{
if (getRouter().getBackstack().size() > 1 /* keep menu visible when exiting the app */ && changeType == ControllerChangeType.POP_EXIT || changeType == ControllerChangeType.PUSH_EXIT)
setOptionsMenuHidden(true);
else
setOptionsMenuHidden(false);
}
}

@Override
protected void onChangeEnded(@NonNull ControllerChangeHandler changeHandler, @NonNull ControllerChangeType changeType)
{
super.onChangeEnded(changeHandler, changeType);
if (getHasOptionsMenu())
setOptionsMenuHidden(false);
}

I need this, so that the menu is hidden between my animations. Could you add a `getHasOptionsMenu()` function to the controller (protected visibility would be enough) to be able to access the private field? Otherwise I would have to track myself if the menu is enabled in my derived controller (although the default controller only does it) and I want to avoid that...

Start in the controller class that owns the private options-menu state and inspect the existing setOptionsMenuHidden behavior. Add the requested protected getter so derived controllers can read that state, then verify that a derived controller can use it during the change callbacks shown in the issue.

Written by the indexing model from the issue text.