Can we manually override the overall status of an Iteration via code

I would like to know, If it is possible to mark the status of an Iteration as Pass/Fail from a test definition.

For example
If there are 5 tests (1,2,3, 3a and 3b). Tests 3a and 3b will be validated if the test 3 is pass. As of now, When the test 3 fails, Then the entire iteration will be marked as Fail.
But I am looking for a way, Where the overall status of the iteration can be marked as Pass/Fail explicitly via code from a test. (But I also expect the individual test within an iteration to be displayed as fail). I have attached the screenshots below to better explain what I am trying to accomplish.

Please advice.

Actual Behavior

What I would like to acheive