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<?php
namespace Guzzle\Batch;
/**
* Interface for efficiently transferring items in a queue using batches
*/
interface BatchInterface
{
/**
* Add an item to the queue
*
* @param mixed $item Item to add
*
* @return self
*/
public function add($item);
/**
* Flush the batch and transfer the items
*
* @return array Returns an array flushed items
*/
public function flush();
/**
* Check if the batch is empty and has further items to transfer
*
* @return bool
*/
public function isEmpty();
}
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