OptionalcommandCommand run when the row is clicked — pass one and the row becomes clickable, which is what makes pagination work without the caller matching on LOAD_MORE_ID by hand.
Your handler is responsible for widening the page (raise the pageSize
you pass in, or track an offset) and refreshing the parent.
OptionaliconIcon for the placeholder item.
OptionallabelLabel for the placeholder item.
Options for withPagination's placeholder row.