//-------------------------------------------------------------------------
/// <summary>
/// Parses the curve groups definition CSV file.
/// <para>
/// The list of <seealso cref="NodalCurveDefinition"/> will be empty in the resulting definition.
///
/// </para>
/// </summary>
/// <param name="groupsCharSource"> the curve groups CSV character source </param>
/// <returns> the list of definitions </returns>
public static IList <RatesCurveGroupDefinition> parseCurveGroupDefinitions(CharSource groupsCharSource)
{
IDictionary <CurveName, ISet <GroupAndReference> > curveGroups = new LinkedHashMap <CurveName, ISet <GroupAndReference> >();
CsvFile csv = CsvFile.of(groupsCharSource, true);
foreach (CsvRow row in csv.rows())
{
string curveGroupStr = row.getField(GROUPS_NAME);
string curveTypeStr = row.getField(GROUPS_CURVE_TYPE);
string referenceStr = row.getField(GROUPS_REFERENCE);
string curveNameStr = row.getField(GROUPS_CURVE_NAME);
GroupAndReference gar = createKey(CurveGroupName.of(curveGroupStr), curveTypeStr, referenceStr);
CurveName curveName = CurveName.of(curveNameStr);
curveGroups.computeIfAbsent(curveName, k => new LinkedHashSet <>()).add(gar);
}
return(buildCurveGroups(curveGroups));
}
