/// <summary>
///
/// </summary>
/// <param name="argumentType"></param>
/// <param name="description"></param>
/// <param name="localKey"></param>
public Tuple <string, int, CGraph> AddOutputArgument(string description, CGraph outputGraph, int globalkey = -1)
{
Tuple <string, int, CGraph> newarg = Tuple.Create(description,
outputGraph.GetStorageReservationKey(), outputGraph);
m_outputArgumentsRecords.Add(newarg);
return(newarg);
}