@Override
    public Collection<String> getRequiredHostGroups(String propertyName,
                                                    String origValue,
                                                    Map<String, Map<String, String>> properties,
                                                    ClusterTopology topology) {

      return propertyUpdater.getRequiredHostGroups(propertyName, origValue, properties, topology);
    }
Transform input string to required output format.

@param originalValue  original value of property

@return formatted output string
ambari-server/src/main/java/org/apache/ambari/server/controller/internal/BlueprintConfigurationProcessor.java