anchor.diff:    override this.ToString() = this.UniqueName
   
     /// For internal use only.
  -  static member internal safeName(name: string option, unresolved: string) = 
  +  static member internal safeName (name: string option, unresolved: string) = 
       match name with
       | Some name -> name
       | None -> unresolved
  
positive.code:   member internal this.trySetParent(parent: TestMetadata) =
      match this._parent with
      | None -> this._parent <- Some parent
      | _ -> //()
        Debug.Assert(false, parent.ToString())
        this._parent <- Some parent
  
  //  interface ITestMetadata with
  //    member this.Name = this.Name
  
negative.code:   /// Metadata display name.
    abstract DisplayName : string
  
    /// For internal use only.
    member internal this.RawSymbolName = this._symbolName
  
    /// Metadata symbol name.
    /// This naming contains parent context symbol names.
    member this.SymbolName =
  