firstActionWillCoverAllSpaceOnDeleting property
When deleting the cell the first action will cover all content size with animation.(emm.. just like iOS native effect) def value = true
当删除的时候，第一个按钮会在删除动画执行的时候覆盖整个cell（ 和iOS原生动画相似 ） 默认为true
Implementation
final bool firstActionWillCoverAllSpaceOnDeleting;