@Override
	public void delete(Iterable<? extends T> entities) {
		for (T entity : entities) {
			delete(entity);
		}
	}
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