code: Map<String, EntityDocument> getEntityDocumentMap(int numOfEntities,
  			WbGetEntitiesActionData properties)
  			throws MediaWikiApiErrorException, IOException {
  		if (numOfEntities == 0) {
  			return Collections.emptyMap();
  		}
  		configureProperties(properties);
  		return this.wbGetEntitiesAction.wbGetEntities(properties);
  	}
docs: Creates a map of identifiers or page titles to documents retrieved via
  the APIs.
  
  @param numOfEntities
  number of entities that should be retrieved
  @param properties
  WbGetEntitiesProperties object that includes all relevant
  parameters for the wbgetentities action
  @return map of document identifiers or titles to documents retrieved via
  the API URL
  @throws MediaWikiApiErrorException
  @throws IOException