type labelled_parameter = | Term of Ppxlib.Asttypes.arg_label
* Ppxlib.Parsetree.expression option
* Ppxlib.Parsetree.pattern| Type of string
type let_bindings = {lbs_bindings : Ppxlib.Parsetree.value_binding list;lbs_rec : Ppxlib.Asttypes.rec_flag;lbs_extension : (Ppxlib.Parsetree.attributes * string Ppxlib.Asttypes.loc)
option;lbs_loc : Ppxlib.Location.t;
}