
                <td class="type">
                    Boolean
                </td>
                <td class="last">
                    <a href="#method_has">has</a>(integer $offset)
                    <p>Returns true if a layer at offset is preset</p>
                </td>
                <td></td>
            </tr>
            </table>


        <h2>Details</h2>

                        <h3 id="method_merge">
        <div class="location">at line 29</div>
        <code>            public            
 