@Override
	public <S extends T> Iterable<S> save(Iterable<S> entities) {
		List<S> result = new ArrayList<S>();
		for (S entity : entities) {
			result.add(save(entity));
		}
		return result;
	}
Helper class for repositories, implementing some behavior in terms of unit methods. Implementations that can perform
operations in bulk are encouraged to override methods implemented here.

@author Eric Bottard
spring-xd-analytics/src/main/java/org/springframework/xd/store/AbstractRepository.java