public Session.Status getStatus() {
        return sessionZooKeeperClient.readStatus();
    }
A session represents an instance of an application that can be edited, prepared and activated. This
class represents the common stuff between sessions working on the local file
system ({@link LocalSession}s) and sessions working on zookeeper ({@link RemoteSession}s).

@author Ulf Lilleengen
@author hmusum
configserver/src/main/java/com/yahoo/vespa/config/server/session/Session.java