anchor.diff:  open TypeProviders.CSharp
   
   module SF =
  +    let stringType =
  +        SyntaxKind.StringKeyword
  +        |> SyntaxFactory.Token
  +        |> SyntaxFactory.PredefinedType
  +
       let objectCreation (arguments: ArgumentSyntax list) typeSyntax =
           SyntaxFactory
               .ObjectCreationExpression(typeSyntax)
  
positive.code:             )
  
  let getFromStringMethod (parseStreamMethod: MethodDeclarationSyntax) returnType =
      let dataParam =
          SyntaxKind.StringKeyword
          |> SyntaxFactory.Token
          |> SyntaxFactory.PredefinedType
          |> SF.parameter "data"
  
      SyntaxFactory
          .MethodDeclaration(returnType, SyntaxFactory.Identifier parseMethodName)
  
negative.code:     let filePathParam =
          SyntaxFactory
              .Parameter(SyntaxFactory.Identifier "filePath")
              .WithType(SF.stringType)
      SyntaxFactory
          .MethodDeclaration(typeSyntax, loadFromFileMethodName)
          .WithParameterList(
  