@Override
  public int hashCode() {
    int result = clusterName != null ? clusterName.hashCode() : 0;
    result = 31 * result + (stackId != null ? stackId.hashCode() : 0);
    result = 31 * result + (type != null ? type.hashCode() : 0);
    result = 31 * result + (version != null ? version.hashCode() : 0);
    return result;
  }
Gets the Stack ID that this configuration is scoped for.

@return
ambari-server/src/main/java/org/apache/ambari/server/controller/ConfigurationResponse.java