this.parentIds = parentIds;
	public NewLinkEvent(		Object source,		String type,		MatrixTreeNode[] sourceNodes,		MatrixTreeNode parentNode,		int index,		int prevIndex) {						super(source);			if (type != LINK_TYPE_MOVE &&				type != LINK_TYPE_NEW_LINK &&				type != LINK_TYPE_CLONE) {					throw new IllegalArgumentException("type must be one of " +						"LINK_TYPE_MOVE or LINK_TYPE_NEW_LINK or LINK_TYPE_CLONE");			}						this.type = type;			this.sourceNodes = sourceNodes;			this.parentNode = parentNode;			this.index = index;			this.prevIndex = prevIndex;	}