creationSupport);
// add filler
WidgetInfo reference = getReferenceWidget(row, column, null);
JavaInfoUtils.add(
filler,
new EmptyInvocationVariableSupport(filler, "%parent%.add(%child%)", 0),
PureFlatStatementGenerator.INSTANCE,
AssociationObjects.invocationChildNull(),
getContainer(),
reference);
// set x/y for new filler