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