src/Controller/Plugin/PaginationParams.php
public function getNeighbours($namespace, $callback, $id)
    {
        $list = $this->getList($namespace, $callback);
        $list->setCurrent($id);
        return [
            $list->getPrevious(),
            $list->getNext()
        ];
    }
public function getNeighbours($namespace, $callback, $id)
    {
        $list = $this->getList($namespace, $callback);
        $list->setCurrent($id);
        return [
            $list->getPrevious(),
            $list->getNext()
        ];
    }
Get previous and next id from the list.

@param string $namespace
@param RepositoryInterface|callable $callback
@param string $id Current application id
@return array
first entry: previous id or null
second entry: next id or null