code: @Override
  	public ResourceList<T> findAll(Iterable<I> ids, QuerySpec querySpec) {
  		RegistryEntry entry = resourceRegistry.findEntry(resourceClass);
  		String idName = entry.getResourceInformation().getIdField().getUnderlyingName();
  
  		QuerySpec idQuerySpec = querySpec.duplicate();
  		idQuerySpec.addFilter(new FilterSpec(Arrays.asList(idName), FilterOperator.EQ, ids));
  		return findAll(idQuerySpec);
  	}
docs: Forwards to {@link #findAll(QuerySpec)}
  
  @param ids
  of the resources
  @param querySpec
  for field and relation inclusion
  @return resources