public void addColocatedMember(String region, Member member) {
    if (!getColocatedMembers().containsKey(region)) {
      getColocatedMembers().put(region, member);
      weight += member.weight;
      changeLocalMaxMemory(member.getConfiguredMaxMemory());
    }
  }
Indicates that this member doesn't have all of the colocated regions
geode-core/src/main/java/org/apache/geode/internal/cache/partitioned/rebalance/model/MemberRollup.java