正确的子类化和重用UITableViewHeaderFooterView。

I have a UITableView where I have section headers that can be tapped to expand or collapse the section. In my particular example each section only has one row, which is either visible (section expanded) or hidden (section collapsed). As section header i'm using custom UITableViewHeaderFooterView - HeaderAccountView. I created *.xib file at Interface Builder , and set it custom class to my HeaderAccountView (still at IB field).I have a UITableView where I have section heade