Method GetTreeAggregateSqlPreviewAsync<TProps>(TreeQueryContext<TProps>, IEnumerable<AggregateRequest>)

SQL Preview for Tree Aggregate (DRY - same SQL as Execute)

public Task<string> GetTreeAggregateSqlPreviewAsync<TProps>(TreeQueryContext<TProps> context, IEnumerable<AggregateRequest> aggregations) where TProps : class, new()