public void initialize() {
    resetAverages();
    identifyOverRedundantBuckets();
    initLowRedundancyBuckets();
  }
Add a region to the model. All regions that are added are assumed to be colocated. The first
region added to the model should be the parent region. The parent region is expected to have at
least as many members as child regions; it may have more. If the parent has more members than
child regions those members will be considered invalid.

@param memberDetailSet A set of details about each member.
geode-core/src/main/java/org/apache/geode/internal/cache/partitioned/rebalance/model/PartitionedRegionLoadModel.java