I'm trying to customize a button bar for my site's datasets using a java customizer. I've added that definition to each dataset's query.xml: <javaCustomizer>org.labkey.bcc.query.MyCustomizer</javaCustomizer>. The goal is to hide and/or rename some of the standard buttons. However, when I getItems() from the buttonBarConfig, the standard buttons are not returned. I can see them in the ButtonBar class when debugging the site and loading a dataset page. That is, _elementList seems to have all the standard buttons in debug, but that version of _elementList isn't what's returned in my customizer.

A stripped down version of the code with some things I was trying looks like:

public class MyCustomizer extends AbstractTableCustomizer
{
     if (ti instanceof AbstractTableInfo)
        {
            AbstractTableInfo ati = (AbstractTableInfo)ti;

            customizeButtonBar(ati);
        }
    }
    private void customizeButtonBar(AbstractTableInfo ti) {
        ButtonBarConfig buttonBarCfg = ti.getButtonBarConfig();
        buttonBarCfg.setIncludeStandardButtons(false);

        Set<String> hiddenStandardButtons = buttonBarCfg.getHiddenStandardButtons();

        List<ButtonConfig> buttons = buttonBarCfg.getItems();
        List<ButtonConfigFactory> queryButtons = LDKService.get().getQueryButtons(ti);

        buttonBarCfg.setItems(buttons);
        ti.setButtonBarConfig(buttonBarCfg);
    }
}

Due to the large number of datasets, I'm hesitant to rely on XML customizations. Any change would have to be repeated across a significant number of files. It's easier and more sustainable to add the customizer to each query when adding new datasets and then control the button configs in a single java class.

Is there a way outside of the XML that I can achieve this without modifying the labkey core code?
Alternatively, is there a way to use XInclude (https://www.xml.com/pub/a/2002/07/31/xinclude.html) to import the buttonbarconfig from another xml file? Tried that as well to no avail.

Thanks!