For sure we need it when making a consecutive call to getDataAndVerify within one WikiaDataAcceess execution, as we hope the data is generated by other process. But in case of the first call, it may harmful. For example we're executing some method 'foo' 2-3 times, and it uses WikiaDataAccess to get the same memcache data. In this scenario we don't want to make additional calls if we already have the data locally.