public void setPort(String jmxPort) {
    port = jmxPort;
  }
Returns the cluster for the user associated with the given authentication. If the user's
access token is expired, it is refreshed and the cluster is reconnected to JMX using the fresh
token. If the refresh fails, the user's cluster is disconnected from JMX and removed from the
repository.
geode-pulse/src/main/java/org/apache/geode/tools/pulse/internal/data/Repository.java