ASTNode[] siblingNodes= StructureSelectionAction.getChildNodes(parent);
ASTNode[] siblingNodes= StructureSelectionAction.getSiblingNodes(node);
	private static ASTNode getNextNode(ASTNode parent, ASTNode node){		ASTNode[] siblingNodes= StructureSelectionAction.getChildNodes(parent);		if (siblingNodes == null || siblingNodes.length == 0)			return parent;		if (node == siblingNodes[siblingNodes.length -1 ])			return parent;		else			return siblingNodes[StructureSelectionAction.findIndex(siblingNodes, node) + 1];	}