@ApiModelProperty(hidden =  true)
  public File getKerberosDescriptorFile() {
    return kerberosDescriptorFile;
  }
Gets a File pointing to the service-level Kerberos descriptor

@return a File pointing to the service-level Kerberos descriptor, or null if no relevant file is
available
ambari-server/src/main/java/org/apache/ambari/server/controller/StackServiceResponse.java