/// <summary>
/// Returns a hash code for this instance.
/// </summary>
public override int GetHashCode()
{
unchecked
{
int hash = 17;
if (SourceNode != null)
{
hash = hash * 92821 + SourceNode.GetHashCode( );
}
hash = hash * 92821 + IsClose.GetHashCode( );
return(hash);
}
}