true if this page has a next page without wrapping. That is simply, if this page is not the last page.
true if this page has a previous page without wrapping. That is simply, if this page > FirstPage
true if this is the first page
true if this page is the lastpage
a Page object representing the next page.
a seq of Pages containing up to k previous pages. Eg, if this was page 4, then previous(2) would return a Seq of Pages for page 2, and page 3.
a Page object representing the previous page.