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There is a newer version: 3.9.0

/*
 * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
 * The software in this package is published under the terms of the CPAL v1.0
 * license, a copy of which has been included with this distribution in the
 * LICENSE.txt file.
 */

package org.mule.streaming;

import org.mule.api.Closeable;

/**
 * A producer implementation that follows the idea of the Producer-Consumer design
 * pattern. Implementing this interface does not guarantee thread safeness. Check
 * each particular implementation for information about that
 * 
 * @since 3.5.0
 */
public interface Producer extends Closeable, ProvidesTotalHint
{

    /**
     * Returns the next available item
     * 
     * @return an item. Might be null
     */
    public T produce();

}