code: @Override
      public <E> List<E> findAll(Class<E> entityClass, String[] columnsToSelect, Object... keys)
      {
          List results = new ArrayList();
          for (Object key : keys)
          {
              Object object = find(entityClass, key);
              if (object != null)
              {
                  results.add(object);
              }
          }
          return results;
      }
docs: /*
  (non-Javadoc)
  
  @see com.impetus.kundera.client.Client#findAll(java.lang.Class,
  java.lang.String[], java.lang.Object[])