question: protected VdcPreCheckResponse2 sendVdcPrecheckRequest2 ( VirtualDataCenter targetVdc , VdcPreCheckParam2 param , int nodeCheckTimeout_ms ) { try { GeoServiceClient client = helper . resetGeoClientCacheTimeout ( targetVdc . getShortId ( ) , null , nodeCheckTimeout_ms ) ; return client . syncVdcConfigPreCheck ( param , targetVdc . getLabel ( ) ) ; } finally { geoClientCache . clearCache ( ) ; } }
target:  Send precheck2 request to target vdc.