ios - Cannot invoke method snackbarWithMessage with an argument list -

i can't understand why method call incorrect. i'm trying use sssnackbar ios swift. has method following signature:

@implementation sssnackbar + (instancetype)snackbarwithmessage:(nsstring *)message                          actiontext:(nsstring *)actiontext                            duration:(nstimeinterval)duration                         actionblock:(void (^)(sssnackbar *sender))actionblock                      dismissalblock:(void (^)(sssnackbar *sender))dismissalblock { 

my call of method:

var bar = sssnackbar.snackbarwithmessage("success auth" nsstring,         actiontext: "ok" nsstring, duration : nstimeinterval(5),         actionblock: {(sender: sssnackbar) -> () in              println("snackbar action")         }, dismissalblock:nil) 

documentations says dismissalblock can nil. compile error: error:(48, 38) cannot invoke 'snackbarwithmessage' argument list of type '(nsstring, actiontext: nsstring, duration: double, actionblock: (sssnackbar) -> (), dismissalblock: nil)'

i tried without casting string nsstring, not nil dismissalblock

upd: have fixed this:

var bar = sssnackbar(message:"success auth", actiontext: "ok", duration : nstimeinterval(5) ,                     actionblock: {snackbar in println("clicked")}, dismissalblock:nil) 

i solved issue:

var bar = sssnackbar(message:"success auth", actiontext: "ok", duration : nstimeinterval(5) ,                 actionblock: {snackbar in println("clicked")}, dismissalblock:nil) 

i don't understand why should call constructor instead of call static class member, seems same in question.