nl_tokens: Represent a dataset client that is managed by sync framework .
pl_tokens: function DatasetClient ( datasetId , opts ) { opts = opts || { } ; this . datasetId = datasetId ; this . queryParams = opts . queryParams || { } ; this . metaData = opts . metaData || { } ; this . <mask> = generateDatasetClientId ( this ) ; this . config = opts . config || datasets . getDatasetConfig ( datasetId ) ; this . collisionCount = opts . collisionCount || 0 ; this . stopped = opts . stopped ; this . syncScheduled = opts . syncScheduled ; this . syncCompleted = opts . syncCompleted ; this . syncLoopStart = opts . syncLoopStart ; this . syncLoopEnd = opts . syncLoopEnd ; this . lastAccessed = opts . lastAccessed ; }