@Override
		public int hashCode() {
			Object v;
			return (((key == null) ? 0 : key.hashCode()) ^
				(((v = getValue()) == null) ? 0 : v.hashCode()));
		}
Removes all mappings from this map.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/pcodeCPort/utils/WeakHashMap2.java