/// <summary>
/// Restores the AWG's settings from a speficied settings file for the external source
///
/// AWGControl:SREStore
/// </summary>
/// <param name="extSource">the EXTSOURCE object</param>
/// <param name="filename">settings file to load</param>
public void SetExtSrcFileRestore(IEXTSOURCE extSource, string filename)
{
extSource.SetExtSrcFileRestore(filename);
}