lib/storage/dataset-clients.js
function(filter, callback) {
      metrics.timeAsyncFunc(metrics.KEYS.MONGODB_OPERATION_TIME, doListDatasetClients)(filter, callback);
    }
function(filter, callback) {
      metrics.timeAsyncFunc(metrics.KEYS.MONGODB_OPERATION_TIME, doListDatasetClients)(filter, callback);
    }
list the currently managed dataset clients
@param {Function} callback