Property access rights
enum @extern Eldbus.Introspection.Property_Access { read: 0, write, readwrite }
typedef enum { ELDBUS_INTROSPECTION_PROPERTY_ACCESS_READ = 0, ELDBUS_INTROSPECTION_PROPERTY_ACCESS_WRITE, ELDBUS_INTROSPECTION_PROPERTY_ACCESS_READWRITE } Eldbus_Introspection_Property_Access;