transferPage
Transfers @page from @self to @other_view.
The @page object will be reused.
It's a programmer error to try to insert a pinned page after a non-pinned one, or a non-pinned page before a pinned one.
Parameters
page
a page of @self
otherView
the tab view to transfer the page to
position
the position to insert the page at, starting at 0