if (evh == null)
throw new IllegalArgumentException("validateEquality tag must be nested in an EditableValueHolder (\"input tag\")");
if (!hasEqualityValidator(evh))
{
evh.addValidator(new EqualityValidator(ev.getFor(), ev.getMessage(), ev.getMessageId(), ev.getOperator()));
evh.setRequired(ev.isRequired());
}
renderChildren(context, component);
}