totype.addSeparator = function(</td><td class="PParameter  prettyprint " nowrap>icon</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Adds a vertical separator using the optional icon.</div></div><div class=CToolTip id="tt13"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">mxDefaultToolbar.prototype.addCombo = function()</td></tr></table></blockquote>Helper method to invoke mxTool