experiment.setFilter(FilterExpression.of(request.getFilter().orNull()));
experiment.setFilter(FilterExpression.of(request.getFilter()));
.addTreatment("control", "the default") .addTreatment("pie", "show them pie") .setFilter(FilterExpression.of("identified")) .allocate("control", 25) .allocate("pie", 25) .create("composite") .setFilter(FilterExpression.of(String.format("%s & %s", User.ATTR_IDENTIFIED, Device.ATTR_DEVICE))) .setHashAttributes(Device.ATTR_DEVICE) .addTreatment("control")