in core/src/main/resources/org/apache/karaf/webconsole/core/behavior/dracula/dracula_graph.js [123:128]
node.show = function() {
this.hidden = false;
this.shape && this.shape.show();
for(i in this.edges)
(this.edges[i].source.id == id || this.edges[i].target == id) && this.edges[i].show && this.edges[i].show();
};