void addToCache(BufferNode cacheHead) {
		prevCached = cacheHead;
		nextCached = cacheHead.nextCached;
		cacheHead.nextCached.prevCached = this;
		cacheHead.nextCached = this;
	}
Link this node to the top of the Cache list.
@param cacheHead
Ghidra/Framework/DB/src/main/java/db/buffers/BufferNode.java