private PerformanceIndex getClientIndex(List<Exception> warnings)
{
PerformanceIndex index = (PerformanceIndex) dataCache.get(Client.class);
if (index == null)
{
ReportingPeriod interval = getReportingPeriod();
index = PerformanceIndex.forClient(getClient(), interval, warnings);
dataCache.put(Client.class, index);
}
return index;
}