this.bundleLocation = bundleLocation; this.factoryPid = factoryPid; this.servicePid = servicePid;
this(bundleLocation, factoryPid, servicePid, null);
    ConfigurationImpl(String bundleLocation,                      String factoryPid,                      String servicePid) {      this.bundleLocation = bundleLocation;      this.factoryPid = factoryPid;      this.servicePid = servicePid;    }