@VisibleForTesting
    Builder setCache(final Cache cache) {
      this.cache = cache;
      return this;
    }
Sets whether buckets should be assigned to partitioned regions in the cache upon Server
start.

@param assignBuckets a boolean indicating if buckets should be assigned upon Server start.
@return this Builder instance.
@see #getAssignBuckets()
geode-core/src/main/java/org/apache/geode/distributed/ServerLauncher.java