public V get(K key) {
		Map<K, V> map = getOrLoadMap();
		synchronized (this) {
			return map.get(key);
		}
	}
Retrieves the value for the given key.  This will currently load the map if not already
loaded.
@param key the key for whose value to retrieve.
@return the value for the given key.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/data/LazyLoadingCachingMap.java