Resolve "getOrHandleAndThrow for an 1 entity."

Closes #12 (closed)

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assigned to @hpage

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• ec4156b4 - add getRequiredAndHandle into CoreCache

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• 4073c3e8 - fix version

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marked this merge request as ready

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• a2693fa7 - fix doc

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• abd2991b - make method overloaded

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Allows for things like this:

@GetMapping("/lab/{qSession}/copy")
	@PreAuthorize("@permissionService.canManageSession(#qSession)")
	public String getLabCopyView(@PathEntity QueueSession<?> qSession,
			Model model) {
		var session = sCache.getRequired(qSession.getSession(), id -> ls.deleteSession(qSession)); // <----

		model.addAttribute("dto", qSession.copyLabCreateDTO(session));
		model.addAttribute("lType", qSession.getType());

		setSessionEditingPageAttributes(qSession, model);

		return "lab/create/" + qSession.getType().name().toLowerCase();
	}

This can occur if, somehow, the session is magically deleted from core, and the user is still trying to interact with the old lab.

requested review from @rwbackx

approved this merge request

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mentioned in commit df824eb2

merged