@Override
  public int hashCode() {
    int result = osFamily != null ? osFamily.hashCode() : 0;
    result = 31 * result + (repo != null ? repo.hashCode() : 0);
    result = 31 * result + (packages != null ? packages.hashCode() : 0);
    return result;
  }
Represents service os-specific details (like repositories and packages). 
Represents <code>osSpecific</code>
ambari-server/src/main/java/org/apache/ambari/server/state/ServiceOsSpecific.java