+void vik_map_source_get_copyright (VikMapSource * self, LatLonBBox bbox, gdouble zoom, void (*fct)(VikViewport*,const gchar*), void *data);
+const gchar *vik_map_source_get_license (VikMapSource * self);
+const gchar *vik_map_source_get_license_url (VikMapSource * self);
+const GdkPixbuf *vik_map_source_get_logo (VikMapSource * self);