static const gchar *map_type_get_label (VikMapSource *self);
static guint16 map_type_get_tilesize_x (VikMapSource *self);
static guint16 map_type_get_tilesize_y (VikMapSource *self);
static const gchar *map_type_get_label (VikMapSource *self);
static guint16 map_type_get_tilesize_x (VikMapSource *self);
static guint16 map_type_get_tilesize_y (VikMapSource *self);