Updated restforce so that a user can refresh a token

src/Rest/OAuthRestClient.php

@@ -100,6 +100,15 @@ public function patchJson(
         );
     }
 
+    public function refreshToken(): OAuthAccessToken
+    {
+        $refreshToken = $this->oAuthAccessToken->getRefreshToken();
+        $refreshedToken = $this->getRefreshToken($refreshToken);
+        $this->oAuthAccessToken = $refreshedToken;
+        return $refreshedToken;
+    }
+
+
     private function setParamsFromAccessToken(): void
     {
         $this->apiRestClient->setBaseUriForRestClient($this->getOAuthAccessToken()->getInstanceUrl());

src/Rest/RestClientInterface.php

@@ -32,4 +32,6 @@ public function patchJson(
         array $headers = [],
         ?float $timeoutSeconds = null
     ): ResponseInterface;
+
+    public function refreshToken(): OAuthAccessToken;
 }

src/Restforce.php

@@ -119,6 +119,11 @@ public function query(string $queryString): ResponseInterface
         ]);
     }
 
+    public function refreshToken(): OAuthAccessToken
+    {
+        return $this->getOAuthRestClient()->refreshToken();
+    }
+
     public function userInfo(): ResponseInterface
     {
         return $this->getOAuthRestClient()->get(self::USER_INFO_ENDPOINT);

src/RestforceInterface.php

@@ -1,6 +1,7 @@
 <?php
 namespace EventFarm\Restforce;
 
+use EventFarm\Restforce\Rest\OAuthAccessToken;
 use Psr\Http\Message\ResponseInterface;
 
 interface RestforceInterface
@@ -13,4 +14,5 @@ public function update(string $sobjectType, string $sobjectId, array $data): Res
     public function describe(string $sobjectType): ResponseInterface;
     public function find(string $sobjectType, string $sobjectId, array $fields = []): ResponseInterface;
     public function getNext(string $url): ResponseInterface;
+    public function refreshToken(): OAuthAccessToken;
 }