manually constructing the type list of RPC functions

hi , the RPC function number in each interface is limited by 9 , I have more than 9 functions . Genode have away to do that by manually constructing the type list of RPC functions instead of using the convenience macro

typedef Meta::Type_tuple<Rpc_myfunc1, Meta::Type_tuple<Rpc_myfunc2, Meta::Empty> > Rpc_functions;

I add that to my intrface session but i get the next error *error: ‘Meta’ does not name a type* and another error * no type named ‘Rpc_functions’ in ‘struct myrpcsession::Session’* I looked to the "cpu_session.h" and tried to do same but i think i miss some thing . any clue? best ,

mohammad