private void AddNeighboursToGraph(AdjacencyList <Vertex2D> graph, int x, int y)
{
var node = new Vertex2D(x, y);
var neighbours = GetLocationNeighbours(node);
graph.AddNode(node);
foreach (var element in neighbours)
{
graph.AddNeighbour(node, new Node <Vertex2D>(element, 1));
}
}