nl_tokens: Function used by provider to set up middleware for each request .
pl_tokens: function applyMiddleware ( middleware , name , instance , container ) { var descriptor = { configurable : true , enumerable : true } ; if ( middleware . length ) { descriptor . get = function getWithMiddlewear ( ) { var index = 0 ; var next = function nextMiddleware ( err ) { if ( err ) { throw err ; } if ( middleware [ index ] ) { middleware [ <mask> ++ ] ( instance , next ) ; } } ; next ( ) ; return instance ; } ; } else { descriptor . value = instance ; descriptor . writable = true ; } Object . defineProperty ( container , name , descriptor ) ; return container [ name ] ; }