/// <summary>
/// Calculates hash code for the edge data object. It is derived from semantic and data hash when available.
/// </summary>
/// <returns>Hash</returns>
public override int GetHashCode()
{
if (Data == null)
{
return(Semantic.GetHashCode());
}
else
{
return(Semantic.GetHashCode() ^ Data.GetHashCode());
}
}
