Switches the page to page_num.
Note that this will only be necessary in custom buttons, as the assistant flow can be set with gtk.assistant.Assistant.setForwardPageFunc.
index of the page to switch to, starting from 0. If negative, the last page will be used. If greater than the number of pages in the assistant, nothing will be done.
Deprecated: This widget will be removed in GTK 5
Switches the page to page_num.
Note that this will only be necessary in custom buttons, as the assistant flow can be set with gtk.assistant.Assistant.setForwardPageFunc.