@Override
  public String toString() {
    return String.format("Job %s installed at %s", super.toString(), getRootPath());
  }
@return  the root path of the installed Samza job on the file system. This path may be in common with
         other job instances if, for example, there are multiple configs defining separate instances.
samza-rest/src/main/java/org/apache/samza/rest/proxy/installation/InstallationRecord.java