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1 efrain 1 
<?php
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namespace GuzzleHttp;
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use Psr\Http\Message\MessageInterface;
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final class BodySummarizer implements BodySummarizerInterface
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{
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    /**
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     * @var int|null
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     */
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    private $truncateAt;
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    public function __construct(int $truncateAt = null)
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    {
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        $this->truncateAt = $truncateAt;
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    }
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    /**
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     * Returns a summarized message body.
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     */
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    public function summarize(MessageInterface $message): ?string
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    {
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        return $this->truncateAt === null
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            ? \GuzzleHttp\Psr7\Message::bodySummary($message)
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            : \GuzzleHttp\Psr7\Message::bodySummary($message, $this->truncateAt);
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    }
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}