rticle class="property">
                <h3 class="private ">$_queue</h3>
                <pre class="signature">$_queue : array</pre>
                <p><em></em></p>
                

                                <h4>Type</h4>
                array
                &mdash; a queue to hold messages in memory before flushing in batches                            </article>
        </div>
        <aside class="span4 detailsbar">
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