public async Task <ICourseText> GetCourseTextByLARS(string LARSRef)
{
Throw.IfNull(LARSRef, nameof(LARSRef));
CourseTextModel persisted = null;
using (var client = _cosmosDbHelper.GetClient())
{
var docs = _cosmosDbHelper.GetCourseTextByLARS(client, _settings.CourseTextCollectionId, LARSRef);
persisted = docs;
}
return(persisted);
}