public Cluster.Member[] getMembers() {
    Cluster.Member[] members;
    synchronized (membersHMap) {
      members = new Cluster.Member[membersHMap.size()];
      members = membersHMap.values().toArray(members);
    }
    return members;
  }
Key should be memberId + memberName Where the ':' in member id and member names are replaced by
'-'


@return the Member for a given key
geode-pulse/src/main/java/org/apache/geode/tools/pulse/internal/data/Cluster.java