anchor.diff:              | _ -> ()
   
           { Definitions=definitions
  -          BasePath=""; Host=""; Schemes=["http"]
  +          BasePath=null; Host=null; Schemes=["http"]
             Paths=paths
             Info=__.Description
             Swagger="2.0" }
  
positive.code:   and Contact =
      { Name:string; Url:string; Email:string }
      static member Empty = 
        { Name=""; Url=""; Email="" }
    and LicenseInfos =
      { Name:string; Url:string }
      static member Empty = 
  
negative.code:           let d = unbox<ObjectDefinition>(value)
            
            writer.WriteStartObject()
  
            writer.WritePropertyName "type"
            writer.WriteValue "object"
  