/**
     * Sets the maximum size of the delete document cache.
     *
     * @param maxDeleteDocumentCacheSize the maximum cache size before batch deletion is triggered
     */
    public void setMaxDeleteDocumentCacheSize(final int maxDeleteDocumentCacheSize) {
        this.maxDeleteDocumentCacheSize = maxDeleteDocumentCacheSize;
    }

    /**
     * Sets the maximum number of redirects to follow when processing URLs.

            public void commit() {
            }
        };

        FileListIndexUpdateCallbackImpl callback = new FileListIndexUpdateCallbackImpl(mockCallback, null, 1);
        callback.setMaxDeleteDocumentCacheSize(1000);

        final int threadCount = 10;
        final int urlsPerThread = 100;
        final Thread[] threads = new Thread[threadCount];
        final Exception[] exceptions = new Exception[threadCount];