> For example, in OpenAPI 3.1, the type field of a schema can be a single string (e.g., "string") or an array of strings (e.g., ["string", "null"]).

> In a statically typed language like Go, this is usually handled by using interface{} (which loses type safety) or complex pointer logic.

Having worked on JSON Schema parsing in go very recently, I disagree with this assessment. You create a `Type` in one of a few (2?) ways, depending on your specific needs. The simple method being that it's a `[]string` under the hood with a custom UnmarshalJSON receiver function. If reproducing the exact input structure is important you can cover that by making `Type` into a struct with a `[]string` and a `bool` to track if it was originally a single or an array. Then you have custom MarshalJSON and UnmarshalJSON receiver functions. That is, in fact, how I've seen multiple existing go JSON Schema libraries handle that variable type. No use of `any` or complex pointers.