documentclass{article}
usepackage[shellescape]{gmp}
begin{document}
begin{mpost}[mpsettings={input metauml;},use]

Class.Config("Config")
("-key1:char*","-value1:char*","-key2:char*","-value2:char*","-key3:char*","-value3:char*","-key4:char*","-value4:char*","-key5:char*","-value5:char*")
("+setValues(key1:char*,value1:char*, key2:char*,value2:char*, key3:char*,value3:char*,key4:char*,value4:char*,key5:char*,value5:char*)");
drawObjects(Config);

end{mpost}
end{document}

Class.A("Point")
  ("#x:int",
   "#y:int")
  ("+set(x:int, y:int)",
   "+getX():int",
   "+getY():int",
   "-debug():void",
   "test():void");
drawObject(A);