$currentPage : integer
currentPage.
$searchTerm : string
searchTerm.
$sort : string
sort.
$limit : integer
limit.
$lang : string
lang.
$context : string
context.
$params : array
params.
getParams()
getCurrentPage()
setCurrentPage(integer $currentPage)
getSearchTerm()
setSearchTerm(string $searchTerm)
getSort()
setSort(string $sort)
getLimit()
setLimit(integer $limit)
getLang()
setLang(string $lang)
getContext()
setContext( $context)
setParams(array $params)
getParamKeys()