+
+ pspec = g_param_spec_boolean ("check-file-server-time",
+ "Check file server time",
+ "Age of current cache before redownloading tile",
+ FALSE /* default value */,
+ G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE);
+ g_object_class_install_property (object_class, PROP_CHECK_FILE_SERVER_TIME, pspec);