app.setAppSource(SourceJsonUnmarshaller.getInstance().unmarshall(context));
stack.setCustomCookbooksSource(SourceJsonUnmarshaller.getInstance().unmarshall(context));
app.setAppSource(SourceJsonUnmarshaller.getInstance().unmarshall(context));
stack.setCustomCookbooksSource(SourceJsonUnmarshaller.getInstance().unmarshall(context));