anchor.diff:    }
   
   type TestSuite =
  -  seq<TestObject>
  +  seq<TestClass>
   
   [<RequireQualifiedAccess>]
   type TestErrorMethod =
  
positive.code:     Run                         : TestClassInstance -> GroupTest
    }
  
  type TestObject =
    {
      Type                        : Type
      Create                      : unit -> TestClassInstance
  
negative.code:   Result<GroupTest, TestError>
  
  type TestObjectResult =
    TestClass * TestMethodResult []
  
  type TestSuiteResult =
    seq<TestObjectResult>
  