Typerepable.S3val typerep_of_t :
'a Std_internal.Typerep.t ->
'b Std_internal.Typerep.t ->
'c Std_internal.Typerep.t ->
('a, 'b, 'c) t Std_internal.Typerep.tval typename_of_t :
'a Typename.t ->
'b Typename.t ->
'c Typename.t ->
('a, 'b, 'c) t Typename.t