 set of entries in the cache</p></p>                        
        </div>
        <div class="tags">
                            <h4>Parameters</h4>

                    <table class="table table-condensed">
                    <tr>
                <td>string|null</td>
                <td>$key</td>
                <td></td>
            </tr>
            </table>

            
                            <h4>Return Value</h4>

                    <table class="table table-condensed">
        <tr>
         