nl_tokens: Loads the database if available
pl_tokens: function ( cb ) { var t = this ; async . waterfall ( [ /**
               * Reads the db.json, if it exists
               *
               * @param cb
               */ function readDb ( cb ) { fs . exists ( t . getDbFilename ( ) , function ( exists ) { if ( exists ) { fs . readFile ( t . getDbFilename ( ) , { encoding : "utf-8" } , cb ) ; } else { cb ( null , null ) ; } } ) ; } , /**
               * Parses the db.json into db
               *
               * @param data
               * @param cb
               */ function parseDb ( data , cb ) { if ( data && data . trim ( ) . length ) { log . debug ( "Parsing database" ) ; t . __db = jsonlint . parse ( <mask> ) ; } else { log . debug ( "No database to parse" ) ; t . __db = { } ; } cb ( null , t . __db ) ; } ] , /**
             * Done
             * @param err
             * @param result
             */ function ( err , result ) { log . debug ( "loaded database: err=" + err ) ; cb ( ) ; } ) ; }