anchor.diff:      // Exercise system
       let result = fixture.Create<IInterface>()
       // Verify outcome
  -    Assert.IsAssignableFrom<IInterface>(result)
  +    verify <@ typeof<IInterface>.IsAssignableFrom(result.GetType()) @>
       // Teardown
   
   [<Fact>]
  
positive.code: open System.Collections.Generic
  open Xunit
  
  [<Fact>]
  let FixtureAutoMocksInterface() =
      // Fixture setup
  
negative.code:     // Exercise system
      let result = fixture.Create<AbstractGenericType<obj>>()
      // Verify outcome
      verify <@ typeof<AbstractGenericType<obj>>.IsAssignableFrom(result.GetType()) @>
  
  [<Fact>]
  let FixtureAutoMocksAbstractGenericTypeWithNonDefaultConstructorWithMultipleParameters() =
  