module type S4 = sig .. end
sig
end
type ('a, 'b, 'c, 'd) t
('a, 'b, 'c, 'd)
val typename_of_t : 'a Typename.typename -> 'b Typename.typename -> 'c Typename.typename -> 'd Typename.typename -> ('a, 'b, 'c, 'd) t Typename.typename
'a Typename.typename -> 'b Typename.typename -> 'c Typename.typename -> 'd Typename.typename -> ('a, 'b, 'c, 'd) t Typename.typename