class Parser::Builders::Default

def kwrestarg(dstar_t, name_t=nil) 

def kwrestarg(dstar_t, name_t=nil)
  if name_t
    n(:kwrestarg, [ value(name_t).to_sym ],
      arg_prefix_map(dstar_t, name_t))
  else
    n0(:kwrestarg,
      arg_prefix_map(dstar_t))
  end
end