Ast_helper.MtdSourceval mk :
?loc:Ocamlformat_ocaml_common.Location.t ->
?attrs:Parsetree.ext_attrs ->
?docs:Docstrings.docs ->
?text:Docstrings.docstring list ->
?typ:Parsetree.module_type ->
string Asttypes.loc ->
Parsetree.module_type_declaration