nl_tokens: of the storage scheme JCM include the epoch of the clock here?
pl_tokens: function ( config , <mask> , scope ) { // Ext . data . utilities . check ( 'DatabaseDefinition' , 'constructor' , 'config' , config , [ 'key' , 'database_name' , 'generation' , 'system_name' , 'replica_number' ] ) ; // this . set ( config ) ; config . config_id = 'definition' ; Ext . data . DatabaseDefinition . superclass . constructor . call ( this , config ) ; }