protected Cie getCieOrCreateIfMissing(Address curAddress, boolean isInDebugFrame)
			throws MemoryAccessException, ExceptionHandlerFrameException {
		Cie cie = cieMap.get(curAddress);
		if (cie == null) {
			cie = createCie(curAddress, isInDebugFrame);
			cieMap.put(curAddress, cie);
		}
		return cie;
	}
This class maintains a lookup of common information entry (CIE) objects; this 
retrieves an existing object (by address), and creates a new CIE if not found.
@param curAddress the address with the CIE
@param isInDebugFrame true indicates the frame containing this CIE is a debug frame.
@return the <code>Cie</code> that was either previously created, or a newly minted object.
@throws MemoryAccessException if memory for the CIE couldn't be read
@throws ExceptionHandlerFrameException if a problem was encountered
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/exceptionhandlers/gcc/sections/AbstractFrameSection.java