77use  Psr \Http \Message \ResponseInterface ;
88
99/** 
10-  * A deferred allow to return a promise which has not been resolved yet 
10+  * A deferred allow to return a promise which has not been resolved yet.  
1111 */ 
1212class  Deferred implements  Promise
1313{
@@ -36,9 +36,9 @@ public function __construct(callable $waitCallback)
3636     */ 
3737    public  function  then (callable  $ onFulfillednull , callable  $ onRejectednull )
3838    {
39-         $ deferrednew  Deferred ($ this waitCallback );
39+         $ deferrednew  self ($ this waitCallback );
4040
41-         $ this onFulfilledCallbacks [] = function  (ResponseInterface $ responseuse ($ onFulfilled$ deferred
41+         $ this onFulfilledCallbacks [] = function  (ResponseInterface $ responseuse   ($ onFulfilled$ deferred
4242            try  {
4343                if  (null  !== $ onFulfilled
4444                    $ response$ onFulfilled$ response
@@ -49,7 +49,7 @@ public function then(callable $onFulfilled = null, callable $onRejected = null)
4949            }
5050        };
5151
52-         $ this onRejectedCallbacks [] = function  (Exception $ exceptionuse ($ onRejected$ deferred
52+         $ this onRejectedCallbacks [] = function  (Exception $ exceptionuse   ($ onRejected$ deferred
5353            try  {
5454                if  (null  !== $ onRejected
5555                    $ response$ onRejected$ exception
@@ -75,11 +75,11 @@ public function getState()
7575    }
7676
7777    /** 
78-      * Resolve this deferred with a Response 
78+      * Resolve this deferred with a Response.  
7979     */ 
8080    public  function  resolve (ResponseInterface $ response
8181    {
82-         if  ($ this -> state  !== self :: PENDING ) {
82+         if  (self :: PENDING  !== $ this -> state ) {
8383            return ;
8484        }
8585
@@ -92,11 +92,11 @@ public function resolve(ResponseInterface $response)
9292    }
9393
9494    /** 
95-      * Reject this deferred with an Exception 
95+      * Reject this deferred with an Exception.  
9696     */ 
9797    public  function  reject (Exception $ exception
9898    {
99-         if  ($ this -> state  !== self :: PENDING ) {
99+         if  (self :: PENDING  !== $ this -> state ) {
100100            return ;
101101        }
102102
@@ -113,7 +113,7 @@ public function reject(Exception $exception)
113113     */ 
114114    public  function  wait ($ unwraptrue )
115115    {
116-         if  ($ this -> state  === self :: PENDING ) {
116+         if  (self :: PENDING  === $ this -> state ) {
117117            $ callback$ this waitCallback ;
118118            $ callback
119119        }
@@ -122,7 +122,7 @@ public function wait($unwrap = true)
122122            return ;
123123        }
124124
125-         if  ($ this -> state  === self :: FULFILLED ) {
125+         if  (self :: FULFILLED  === $ this -> state ) {
126126            return  $ this value ;
127127        }
128128
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