nl_tokens: Wraps the callback - based method . When no originalCallback is not defined it returns a Promise .
pl_tokens: function promiseWrapper ( options , originalCallback , handler ) { if ( typeof originalCallback === 'function' ) { // Callback-based invocation handler . call ( this , originalCallback ) ; return undefined ; } const factory = options . promiseFactory || defaultPromiseFactory ; const <mask> = this ; return factory ( function handlerWrapper ( callback ) { handler . call ( self , callback ) ; } ) ; }