required: false
          schema:
            type: string
            example: en
        - name: preference
          in: query
          description: String to specify a shard for searching
          required: false
          schema:
            type: string
            example: abc
        - name: callback
          in: query
          description: Callback name for using JSONP

    /** The key of the configuration. e.g. 100 */
    String PAGING_SEARCH_PAGE_MAX_SIZE = "paging.search.page.max.size";

    /** The key of the configuration. e.g. -1 */
    String SEARCHLOG_AGG_SHARD_SIZE = "searchlog.agg.shard.size";

    /** The key of the configuration. e.g.  */
    String SEARCHLOG_REQUEST_HEADERS = "searchlog.request.headers";

    /** The key of the configuration. e.g. 100 */

page.searchlog.max.fetch.size=10000

page.searchlist.track.total.hits=true

# search page
paging.search.page.start=0
paging.search.page.size=10
paging.search.page.max.size=100

searchlog.agg.shard.size=-1
searchlog.request.headers=

thumbnail.html.image.min.width=100
thumbnail.html.image.min.height=100
thumbnail.html.image.max.aspect.ratio=3.0
thumbnail.html.image.thumbnail.width=100