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diff --git a/Postman/Postman-Mail/mailgun/vendor/php-http/curl-client/src/CurlPromise.php b/Postman/Postman-Mail/mailgun/vendor/php-http/curl-client/src/CurlPromise.php
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index 0000000..68a775c
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+++ b/Postman/Postman-Mail/mailgun/vendor/php-http/curl-client/src/CurlPromise.php
@@ -0,0 +1,108 @@
+<?php
+namespace Http\Client\Curl;
+
+use Http\Promise\Promise;
+
+/**
+ * Promise represents a response that may not be available yet, but will be resolved at some point
+ * in future. It acts like a proxy to the actual response.
+ *
+ * This interface is an extension of the promises/a+ specification https://promisesaplus.com/
+ * Value is replaced by an object where its class implement a Psr\Http\Message\RequestInterface.
+ * Reason is replaced by an object where its class implement a Http\Client\Exception.
+ *
+ * @license http://opensource.org/licenses/MIT MIT
+ *
+ * @author  Михаил Красильников <m.krasilnikov@yandex.ru>
+ */
+class CurlPromise implements Promise
+{
+    /**
+     * Shared promise core
+     *
+     * @var PromiseCore
+     */
+    private $core;
+
+    /**
+     * Requests runner
+     *
+     * @var MultiRunner
+     */
+    private $runner;
+
+    /**
+     * Create new promise.
+     *
+     * @param PromiseCore $core   Shared promise core
+     * @param MultiRunner $runner Simultaneous requests runner
+     */
+    public function __construct(PromiseCore $core, MultiRunner $runner)
+    {
+        $this->core = $core;
+        $this->runner = $runner;
+    }
+
+    /**
+     * Add behavior for when the promise is resolved or rejected.
+     *
+     * If you do not care about one of the cases, you can set the corresponding callable to null
+     * The callback will be called when the response or exception arrived and never more than once.
+     *
+     * @param callable $onFulfilled Called when a response will be available.
+     * @param callable $onRejected  Called when an error happens.
+     *
+     * You must always return the Response in the interface or throw an Exception.
+     *
+     * @return Promise Always returns a new promise which is resolved with value of the executed
+     *                 callback (onFulfilled / onRejected).
+     */
+    public function then(callable $onFulfilled = null, callable $onRejected = null)
+    {
+        if ($onFulfilled) {
+            $this->core->addOnFulfilled($onFulfilled);
+        }
+        if ($onRejected) {
+            $this->core->addOnRejected($onRejected);
+        }
+
+        return new self($this->core, $this->runner);
+    }
+
+    /**
+     * Get the state of the promise, one of PENDING, FULFILLED or REJECTED.
+     *
+     * @return string
+     */
+    public function getState()
+    {
+        return $this->core->getState();
+    }
+
+    /**
+     * Wait for the promise to be fulfilled or rejected.
+     *
+     * When this method returns, the request has been resolved and the appropriate callable has terminated.
+     *
+     * When called with the unwrap option
+     *
+     * @param bool $unwrap Whether to return resolved value / throw reason or not
+     *
+     * @return \Psr\Http\Message\ResponseInterface|null Resolved value, null if $unwrap is set to false
+     *
+     * @throws \Http\Client\Exception The rejection reason.
+     */
+    public function wait($unwrap = true)
+    {
+        $this->runner->wait($this->core);
+
+        if ($unwrap) {
+            if ($this->core->getState() === self::REJECTED) {
+                throw $this->core->getException();
+            }
+
+            return $this->core->getResponse();
+        }
+        return null;
+    }
+}