@SuppressWarnings("unchecked")
	private void processQueue() {
		MySoftReference ref;
		while ((ref = (MySoftReference) refQueue.poll()) != null) {
			map.remove(ref.key);
		}
	}
@see java.util.Map#remove(java.lang.Object)
Ghidra/Framework/Generic/src/main/java/ghidra/util/datastruct/SoftCacheMap.java