anchor.diff:              |> count 
               |> task
   
  -        member __.CountByExpressionAsync (exp): Task<int> = 
  +        member __.CountByExpressionAsync (exp: Linq.Expressions.Expression<Func<'doctype, bool>>): Task<int> = 
               exp 
               |> ExpressionParser.parse 
               |> countBySelector 
  
positive.code:     open System.Threading.Tasks
      open System.Collections.Generic
      open Davenport.Csharp.Types
  
      module ExpressionParser = 
          open System.Linq.Expressions
  
negative.code:             |> Async.Map x.ToListResponse<'doctype>
              |> task
  
          member x.ListWithoutDocsAsync ([<Optional; DefaultParameterValue(null)>]?options): Task<ListResponse<obj>> = 
              let opts = 
                  options 
                  |> Option.map listOptionsToFs
  