set_link("link", x);
set_link("link_time", ValueNode_Const::create(Time(0)));
set_link("local_time", ValueNode_Const::create(Time(0)));
set_link("link", x);
set_link("link_time", ValueNode_Const::create(Time(0)));
set_link("local_time", ValueNode_Const::create(Time(0)));