iface->get_n_pages = comics_document_get_n_pages;
iface->get_page_size = comics_document_get_page_size;
iface->render = comics_document_render;
iface->get_n_pages = comics_document_get_n_pages;
iface->get_page_size = comics_document_get_page_size;
iface->render = comics_document_render;