internal static Medication GetMedication(DomainResource domainResource, Element medication)
{
switch (medication)
{
case ResourceReference medicationReference:
return(domainResource.GetContainedResource <Medication>(medicationReference));
case CodeableConcept medicationCodeableConcept:
return(ToMedication(medicationCodeableConcept));
default:
throw new ArgumentOutOfRangeException(nameof(medication)
, $"Allowed {nameof(ResourceReference)} or {nameof(CodeableConcept)} only");
}
}