Toolkit2/Toolkit.UI.Controls.Avalonia/Themes/ControlResources.axaml

<Styles xmlns="https://github.com/avaloniaui" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <Styles.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <MergeResourceInclude Source="../CarouselView/CarouselView.axaml" />
                <MergeResourceInclude Source="../ContentDialog/ContentDialog.axaml" />
                <MergeResourceInclude Source="../SettingsExpander/SettingsExpander.axaml" />
                <MergeResourceInclude Source="../SettingsExpander/SettingsExpanderItem.axaml" />
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </Styles.Resources>
</Styles>