in core/src/main/resources/org/apache/karaf/webconsole/core/behavior/dracula/dracula_graph.js [117:122]
node.hide = function() {
this.hidden = true;
this.shape && this.shape.hide(); /* FIXME this is representation specific code and should be elsewhere */
for(i in this.edges)
(this.edges[i].source.id == id || this.edges[i].target == id) && this.edges[i].hide && this.edges[i].hide();
};