code: public void setPersistenceDelegate(Class<?> type, PersistenceDelegate delegate)
  	{
  		if (type == null || delegate == null)
  		{
  			throw new NullPointerException();
  		}
  		delegates.put(type, delegate);
  	}
docs: Register the <code>PersistenceDelegate</code> of the specified type.
  
  @param type
  @param delegate