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1 efrain 1 
<?php
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namespace GuzzleHttp\Promise;
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/**
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 * A promise that has been fulfilled.
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 *
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 * Thenning off of this promise will invoke the onFulfilled callback
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 * immediately and ignore other callbacks.
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 */
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class FulfilledPromise implements PromiseInterface
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{
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    private $value;
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    public function __construct($value)
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    {
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        if (is_object($value) && method_exists($value, 'then')) {
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            throw new \InvalidArgumentException(
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                'You cannot create a FulfilledPromise with a promise.'
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            );
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        }
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        $this->value = $value;
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    }
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    public function then(
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        callable $onFulfilled = null,
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        callable $onRejected = null
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    ) {
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        // Return itself if there is no onFulfilled function.
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        if (!$onFulfilled) {
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            return $this;
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        }
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        $queue = Utils::queue();
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        $p = new Promise([$queue, 'run']);
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        $value = $this->value;
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        $queue->add(static function () use ($p, $value, $onFulfilled) {
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            if (Is::pending($p)) {
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                try {
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                    $p->resolve($onFulfilled($value));
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                } catch (\Throwable $e) {
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                    $p->reject($e);
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                } catch (\Exception $e) {
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                    $p->reject($e);
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                }
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            }
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        });
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        return $p;
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    }
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    public function otherwise(callable $onRejected)
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    {
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        return $this->then(null, $onRejected);
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    }
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    public function wait($unwrap = true, $defaultDelivery = null)
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    {
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        return $unwrap ? $this->value : null;
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    }
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    public function getState()
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    {
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        return self::FULFILLED;
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    }
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    public function resolve($value)
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    {
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        if ($value !== $this->value) {
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            throw new \LogicException("Cannot resolve a fulfilled promise");
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        }
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    }
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    public function reject($reason)
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    {
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        throw new \LogicException("Cannot reject a fulfilled promise");
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    }
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    public function cancel()
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    {
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        // pass
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    }
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}