# define sd_bus_default_user(p) ((*(p)=NULL),(-ENOTSUP))
# define sd_bus_default_system(p) ((*(p)=NULL),(-ENOTSUP))
# define sd_bus_call_method(...) (-ENOTSUP)
# define sd_bus_default_user(p) ((*(p)=NULL),(-ENOTSUP))
# define sd_bus_default_system(p) ((*(p)=NULL),(-ENOTSUP))
# define sd_bus_call_method(...) (-ENOTSUP)