anchor.diff:  
   type NullableTypeContext(converter : IValueConverter) =
       interface ITypeContext with
  +        member this.GetNamedTypes = upcast []
           member this.GetTranslator(ty) =
               if ty.IsValueType
                   && ty.IsGenericType
  
positive.code: ﻿namespace GraphQL.Parser
  open System.Reflection
  open System.Collections.Generic
  
  
negative.code:             box arr
          | _ -> failwith "Value not suitable for array initialization"
      interface ITypeContext with
          member this.GetNamedTypes = upcast []
          member this.GetTranslator(targetType) =
              if targetType.IsArray then
                  let clrElementType = targetType.GetElementType()
  