nl_tokens: TODO : Document
pl_tokens: function ( callback ) { let dbName = this . db . <mask> ; this . db . close ( ) ; IndexedDB . clean ( this . db . name , ( ) => { IndexedDB . open ( dbName , ( err , other ) => { if ( err ) { log ( '[IndexedDB] Error while resetting local storage' , err ) ; } else { // hacky! this . db = other ; } if ( typeof callback === 'function' ) { callback ( self ) ; } } ) ; } ) ; }