mocking base ctor

       public class BaseClass
        {
            
            public BaseClass()
            {
                throw new NotImplementedException();
            }
        }
        public class MyClass : BaseClass
        {
            
            public MyClass()
            {
                //access database or something costly
            }
            
       }

      [Test]
        public void IsolatingBaseCtor()
        {
            MyClass fake = Isolate.Fake.Instance<MyClass>(Members.CallOriginal, 
                ConstructorWillBe.Called, 
                ConstructorWillBe.Ignored);
        }
Exception:
TestCase 'IsolatorBasics.Examples.IsolatingBaseCtor'
failed: TypeMock.TypeMockException : 
*** Constructor with specified arguments was not found in type IsolatorBasics.Examples+MyClass
  ----> System.MissingMethodException : Constructor on type 'IsolatorBasics.Examples+MyClass' not found.
   at er.CreateFakeInstance[T](Members behavior, Constructor constructorFlag, Constructor baseConstructorFlag, Type baseType, Object[] ctorArgs)
   at er.Instance[T](Members behavior, ConstructorWillBe constructorBehavior, Object[] constructorArguments)
   C:UsersLiorDocumentsAgile CoursesTDD.NetDay 2Second Half DayLabIsolator BasicsIsolatorBasicsExamples.cs(228,0): at IsolatorBasics.Examples.IsolatingBaseCtor()
   at TypeMock.MockManager.a(String A_0, String A_1, Object A_2, Object A_3, Boolean A_4, Object[] A_5)
   at TypeMock.InternalMockManager.getReturn(Object that, String typeName, String methodName, Object methodParameters, Boolean isInjected)
   C:UsersLiorDocumentsAgile CoursesTDD.NetDay 2Second Half DayLabIsolator BasicsIsolatorBasicsExamples.cs(227,0): at IsolatorBasics.Examples.IsolatingBaseCtor()
   --MissingMethodException
   at System.RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes)
   at TypeMock.MockManager.a(Type A_0, Object[] A_1)
   at TypeMock.MockManager.b(Type A_0, Object[] A_1)
   at TypeMock.MockManager.MockObject(Type type, Constructor mockConstructors, Object[] args)
   at TypeMock.MockManager.MockObject[TMockedType](Constructor mockConstructors, Object[] args)
   at TypeMock.ArrangeActAssert.InstanceFakerBase`1.d()