c_gtk_page_setup_set_paper_size_and_default_margins

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
__gshared extern (C)
void function(GtkPageSetup* setup, GtkPaperSize* size) c_gtk_page_setup_set_paper_size_and_default_margins;

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