public Task <TResult> MapResultAsync <TResult>(IEnumerable <DynamicObject> source, Expression expression)
 => Task.Run(() => DynamicResultMapper.MapToType <TResult>(source, _mapper, expression));
 public Task <TResult> MapResultAsync <TResult>(IEnumerable <DynamicObject> source, Expression expression)
 {
     return(Task.Factory.StartNew(() => DynamicResultMapper.MapToType <TResult>(source, _mapper, expression)));
 }