code: public void destroy() {
  		List<byte[]> digestList = getDigestList();
  
  		client.put(this.policy, this.key, Bin.asNull(this.binNameString));
  
  		for (byte[] digest : digestList) {
  			Key subKey = new Key(this.key.namespace, digest, null, null);
  			client.delete(this.policy, subKey);
  		}
  	}
docs: Delete bin containing the list.