/// <summary>
/// Returns true if the given vertex has the given neighbour.
/// </summary>
/// <param name="vertex1"></param>
/// <param name="vertex2"></param>
/// <param name="shape"></param>
/// <returns></returns>
public override bool GetEdgeShape(uint vertex1, uint vertex2, out ICoordinateCollection shape)
{
return(_graph.GetEdgeShape(vertex1, vertex2, out shape));
}