private Region createRegionWithoutRoot(String regionName, RegionAttributes create) {
        getCache().createRegion(regionName, create);
        return null;
      }
Create a cache server with partitioned region.

@param server VM where to create the cache server.
@param port cache server port.
@param isAccessor if true the under lying partitioned region will not host data on this vm.
@param redundantCopies number of redundant copies for the primary bucket.
geode-cq/src/distributedTest/java/org/apache/geode/cache/query/cq/dunit/PartitionedRegionCqQueryDUnitTest.java