public List <String> getIncident(String nodeID){
		increaseAccess();
		
		Node node = nodeMap.get(nodeID);
		List <String> result = new ArrayList<String>();
		if (node != null) {
			for(Map.Entry<String, Edge> entrySet : this.edgeMap.entrySet()) {
				Edge edge = entrySet.getValue();
				
				if ((edge.getNode1().equals(node)) || (edge.getNode2().equals(node))) {
					result.add(edge.getId());
				}
			}
		}
		return result;
	}