if no lifetime should be used pass null parameter
if no lifetime should be used pass null parameter

else file backend interprets this as 0 lifetime which would cause immideate expiration

nsams/koala-framework,Ben-Ho/koala-framework,koala-framework/koala-framework,darimpulso/koala-framework,nsams/koala-framework,yacon/koala-framework,Ben-Ho/koala-framework,yacon/koala-framework,Sogl/koala-framework,darimpulso/koala-framework,yacon/koala-framework,Sogl/koala-framework,nsams/koala-framework,koala-framework/koala-framework,kaufmo/koala-framework,kaufmo/koala-framework,kaufmo/koala-framework