private void cancelClientEstimate(ClientProxyMembershipID id, ServerLocation location) {
    if (id != null) {
      removeAndCancelEstimate(new EstimateMapKey(id.getIdentity(), location));
    }
  }
If it is most loaded then return its LoadHolder; otherwise return null;
geode-core/src/main/java/org/apache/geode/distributed/internal/LocatorLoadSnapshot.java