These flags extend #GParamFlags. Most of the time you will use them in conjunction with g_object_class_install_property().
The parameter is persistent, which means its value is saved to #CamelObject:state-filename during camel_object_state_write(), and restored during camel_object_state_read().
These flags extend #GParamFlags. Most of the time you will use them in conjunction with g_object_class_install_property().