public String getConfiguration() {
    return configuration;
  }
Gets the configuration type and property name indicating the property to be updated with the
generated principal

@return a String declaring the configuration type and property name indicating the property to
be updated with the generated principal
#see #configuration
ambari-server/src/main/java/org/apache/ambari/server/state/kerberos/KerberosPrincipalDescriptor.java