1 2 #include <boost/parameter.hpp> 3 4 namespace boost { namespace python { 5 6 template < 7 typename A0 8 , typename A1 = boost::parameter::void_ 9 , typename A2 = boost::parameter::void_ 10 , typename A3 = boost::parameter::void_ 11 > 12 struct class_ 13 { 14 }; 15 }} 16 17