{{{
#!metapost
input metauml;
beginfig(1);

Class.A("A")()();
Class.B("B")()();

Package.pA("net.foo")();
Package.pB("net.foo.bar")(A, B);

leftToRight(20)(A, B);
leftToRight(50)(pA, pB);

drawObjects(pA, pB);

clink(nest)(pB, pA);

endfig;
end
}}}