Returns the index of the previous navigable page instance.
This works in a similar way to .getPreviousPageInstance. However, in some circumstances, like when deleting a page instance, the previous page instance may have been deleted. This function only returns an instance that does exist, or the next in the index if the instance has been deleted.
Executed
Client-side and server-side.
Arguments
None.
Returns
Integer.
Last modified on September 13, 2023
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