////////////////////////////////////////////////////////////////////////////////
/// @startDocuBlock DeleteApiQueryCache
/// @brief clears the AQL query cache
///
/// @RESTHEADER{DELETE /_api/query-cache, Clears any results in the AQL query cache}
///
/// @RESTDESCRIPTION
/// clears the query cache
/// @RESTRETURNCODES
///
/// @RESTRETURNCODE{200}
/// The server will respond with *HTTP 200* when the cache was cleared
/// successfully.
///
/// @RESTRETURNCODE{400}
/// The server will respond with *HTTP 400* in case of a malformed request.
/// @endDocuBlock
////////////////////////////////////////////////////////////////////////////////