get Page Label
abstract fun getPageLabel(@IntRange(from = 0 ) pageIndex: Int, substituteWithPlainLabel: Boolean): String
Gets the page label.
Return
The page label of the page requested, or null if the document has no label for it and substituteWithPlainLabel is false.
Parameters
page Index
The index of the page.
substitute With Plain Label
If true, and no page label exists for the given page, returns a string with the page number.