private void stop(final Membership<MemberIdentifier>... memberships) {
    Arrays.stream(memberships).forEach(membership -> membership.disconnect(false));
  }
Tests of using the membership APIs to make multiple Membership systems that communicate
with each other and form a group
geode-membership/src/integrationTest/java/org/apache/geode/distributed/internal/membership/gms/MembershipIntegrationTest.java