switchCase

pub fn switchCase(tree: Ast, node: Node.Index) full.SwitchCase {
    const extra_index, const target_expr = tree.nodeData(node).extra_and_node;
    const values = tree.extraDataSlice(tree.extraData(extra_index, Node.SubRange), Node.Index);
    return tree.fullSwitchCaseComponents(.{
        .values = values,
        .arrow_token = tree.nodeMainToken(node),
        .target_expr = target_expr,
    }, node);
}