code: @Override
      public void unIndex(Class entityClazz, Object entity, EntityMetadata metadata, MetamodelImpl metamodelImpl)
      {
          Object id = PropertyAccessorHelper.getId(entity, metadata);
          DeleteResponse response = client
                  .prepareDelete(metadata.getSchema().toLowerCase(), entityClazz.getSimpleName(), id.toString()).execute()
                  .actionGet();
      }
docs: /*
  (non-Javadoc)
  
  @see com.impetus.kundera.index.Indexer#unIndex(java.lang.Class,
  java.lang.Object, com.impetus.kundera.metadata.model.EntityMetadata,
  com.impetus.kundera.metadata.model.MetamodelImpl)