////////////////////////////////////////////////////////////////////////////////
/// @startDocuBlock JSF_cluster_statistics_GET
/// @brief allows to query the statistics of a DBserver in the cluster
///
/// @RESTHEADER{GET /_admin/clusterStatistics, Queries statistics of DBserver}
///
/// @RESTQUERYPARAMETERS
///
/// @RESTQUERYPARAM{DBserver,string,required}
///
/// @RESTDESCRIPTION Queries the statistics of the given DBserver
///
/// @RESTRETURNCODES
///
/// @RESTRETURNCODE{200} is returned when everything went well.
///
/// @RESTRETURNCODE{400} the parameter DBserver was not given or is not the
/// ID of a DBserver
///
/// @RESTRETURNCODE{403} server is not a coordinator.
/// @endDocuBlock
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