                  &nbsp;&nbsp;<code>childEdgesOptions:&nbsp;Array</code><br>)</td>
                <td>Function</td>
                <td><i>Optional. </i> Before creating the new cluster node, this (optional) function will be called with
                    the
                    properties supplied by you (<code>clusterNodeProperties</code>), all contained nodes and all
                    contained
                    edges. You can use this to update the
                    properties of the cluster bas