public static void DropCache()
{
vissimWrapper = null;
}
/// <summary>
///
/// </summary>
/// <param name="eval"></param>
/// <returns>Cached wrapper</returns>
public static VissimWrapper Wrap(this Vissim vissim)
{
if (vissimWrapper == null) vissimWrapper = new VissimWrapper(vissim);
return vissimWrapper;
}