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The best way to deal with circular dependencies is to turn your circle into a triangle – that is, to make both classes that would depend on each other instead depend (at least in part) on some third Role.

Here's how that might look with the example you provided and a Shaveable role (Yaks should be Shaveable, right?):

From the wiki page it sounds like the @JsonUnwrapped annotation should do what you want.

@JsonUnwrapped: property annotation used to define that value should be "unwrapped" when serialized (and wrapped again when deserializing), resulting in flattening of data structure, compared to POJO structure.

The Javadoc for the class also has an example that looks appropriate.

You can only use declaration quasi quotes in top-level declarations unfortunately. From the documentation:

A quasiquote may appear in place of

• An expression
• A pattern
• A type
• A top-level declaration

Instead of using TH, you could consider using OverloadedStrings:

Refactor this:

If you only need compile-time checking, it is very easy to do with a mapped type and an intersection (an identity mapped type thrown in for "prettifying" the generated type):

Jackson does not consider that to be invalid JSON, it just ignores the trailing }} and decodes the {} as an empty object.

Why Vacant locations in the address space are never accessible in RISC-V ISA?

This is by definition.  From the second paragraph in section 1.4:

Different address ranges of a hart’s address space may (1) be vacant, or (2) contain main memory, or (3) contain one or more I/O devices.

So, this is saying that there may be address ranges that have neither memory nor I/O devices: and these are called vacant locations.

Ordinarily, if an instruction attempts to access memory at an inaccessible address, an exception is raised for the instruction.  Vacant locations in the address space are never accessible.

And further that such vacant locations are inaccessible meaning that attempting to access them will fault (cause an exception).

The hart is (programmable by the operating system to be) aware of three kinds of address ranges: main memory, I/O devices, and vacant (i.e. neither).  Attempts to execute a load or a store at a vacant location will fault because there's nothing there to access, and the hart knows this (i.e. it has been told what ranges are valid/invalid).

TL;DR:

How can I assemble .ptx file and host code file and make a executable file?

You use the CUDA driver API. Relevant sample codes are vectorAddDrv (or perhaps any other driver API sample code) as well as ptxjit.

Do I need a .cu file to run it or is there another way to run it?

You do not need a .cu file (nor do you need nvcc) to use the driver API method, if you start with device code in PTX form.

Details:

The remainder of this answer is not intended to be a tutorial on driver API programming (use the references already given and the API reference manual here), nor is it intended to be a tutorial on PTX programming. For PTX programming I refer you to the PTX documentation.

To start with, we need an appropriate PTX kernel definition. (For that, rather than writing my own kernel PTX code, I will use the one from the vectorAddDrv sample code, from the CUDA 11.1 toolkit, converting that CUDA C++ kernel definition to an equivalent PTX kernel definition via nvcc -ptx vectorAdd_kernel.cu):

vectorAdd_kernel.ptx:

A few things for this. Using the __InstanceOperationEvent class is going to give you all create, delete, and modification events for the namespace. This means any time any property on the process instance changes, such as memory (which happens frequently), you'll receive a event to be handled. That's why you are getting so many events being raised.

The other thing I noticed is that your startWatch and stopWatch code share the same query. This means that you are going to receive duplicate events anyway even if the WMI events were only being raised on creation and deletion. You can combine these into one object and event handler then handle which kind of event is being processed in your code like below.