Md (ppxlib.Ppxlib_ast.Ast

val mk : 
  ?loc:Astlib.Location.t ->
  ?attrs:Astlib.Ast_500.Parsetree.attribute list ->
  string option Astlib.Location.loc ->
  Astlib.Ast_500.Parsetree.module_type ->
  Astlib.Ast_500.Parsetree.module_declaration