@Override
  public boolean equals(Object o) {
    if (this == o) {
      return true;
    }
    if (o == null || getClass() != o.getClass()) {
      return false;
    }
    InternalDistributedMember that = (InternalDistributedMember) o;
    return memberIdentifier.equals(that.memberIdentifier);
  }
Returns this client member's durable attributes or null if no durable attributes were created.
geode-core/src/main/java/org/apache/geode/distributed/internal/membership/InternalDistributedMember.java