namespace Microsoft.FSharp.Linq
{
    [Class]
    [CompilationMapping(SourceConstructFlags.ObjectType)]
    public class QueryBuilder
    {
        [CustomOperation("thenByNullableDescending", AllowIntoPattern = true, MaintainsVariableSpace = true)]
        public QuerySource<T, Q> ThenByNullableDescending<T, Q, TKey>(QuerySource<T, Q> source, [ProjectionParameter] FSharpFunc<T, TKey?> keySelector)
            where TKey, struct;
    }
}