private Unit GetUnit(string unitGroupId, string unitId)
{
var unitGroup = UnitGroups
.FirstOrDefault(ug => ug.GroupIdentifier == unitGroupId);
if (unitGroup == null)
{
throw new ExpectedException($"'{unitGroupId}' is not a known unit group.");
}
var unit = unitGroup
.Units
.FirstOrDefault(u => u.UnitIdentifier == unitId);
if (unit == null)
{
throw new ExpectedException($"'{unitId}' is not part of the '{unitGroup.GroupIdentifier}' unit group.");
}
return(unit);
}
public static UnitGroup GetUnitGroup(this UnitGroups source, string id)
{
return(source.FirstOrDefault(l => l.Id == id));
}
