public override string ToString()
{
return("{ " + StartVertex.ToString() + ", " + EndVertex.ToString() + " }");
}
/// <summary>
/// Creates a String Representation of this HalfEdge.
/// </summary>
/// <returns>String representation of this HalfEdge.</returns>
public override string ToString()
{
return($"From: {StartVertex.ToString()} " +
$"To: {EndVertex.ToString()}");
}