code: @Override
  	public void init() {
  
  		RepositoryConfigurationExtension extension = new SolrRepositoryConfigExtension();
  		RepositoryBeanDefinitionParser parser = new RepositoryBeanDefinitionParser(extension);
  
  		registerBeanDefinitionParser("repositories", parser);
  		registerBeanDefinitionParser("embedded-solr-server", new EmbeddedSolrServerBeanDefinitionParser());
  		registerBeanDefinitionParser("solr-client", new HttpSolrClientBeanDefinitionParser());
  	}
docs: /*
  (non-Javadoc)
  @see org.springframework.beans.factory.xml.NamespaceHandler#init()