如何样式化一个独立于其子列表.insetGrouped布局的UICollectionViewCompositionalLayout标题？

// 定义自定义的UICollectionReusableView作为sectionHeader
class CustomSectionHeader: UICollectionReusableView {
    // 添加标题显示的UILabel等UI元素，并进行样式设置
    // ...
}

// 在UICollectionViewCompositionalLayout的配置中使用自定义的sectionHeader
let layout = UICollectionViewCompositionalLayout { (sectionIndex, layoutEnvironment) -> NSCollectionLayoutSection? in
    // 创建sectionHeader的布局
    let sectionHeaderSize = NSCollectionLayoutSize(widthDimension: .fractionalWidth(1.0), heightDimension: .estimated(50))
    let sectionHeader = NSCollectionLayoutBoundarySupplementaryItem(layoutSize: sectionHeaderSize, elementKind: UICollectionView.elementKindSectionHeader, alignment: .top)

    // 创建section的布局
    // ...

    // 将sectionHeader添加到section的supplementaryItems属性中
    section.boundarySupplementaryItems = [sectionHeader]
    
    return section
}

// 注册自定义的sectionHeader
collectionView.register(CustomSectionHeader.self, forSupplementaryViewOfKind: UICollectionView.elementKindSectionHeader, withReuseIdentifier: "CustomSectionHeader")