code: void addInstance(final Class<?> discoveredType, final Object newlyConstructed)
  	{
  		WeakHashMap<Object, Void> map;
  
  		synchronized (instances)
  		{
  			map = instances.get(discoveredType);
  
  			if (map == null)
  			{
  				map = new WeakHashMap<>();
  				instances.put(discoveredType, map);
  			}
  		}
  
  		synchronized (map)
  		{
  			map.put(newlyConstructed, null);
  		}
  	}
docs: Register an instance of a property-consuming type; the registry will use a weak reference to hold on to this instance, so
  that it can be discarded if it has a short lifespan
  
  @param discoveredType
  @param newlyConstructed