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Code Duplication    Length = 17-18 lines in 2 locations

src/GlLinkCheckerError.php 2 locations

@@ 98-115 (lines=18) @@
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    /**
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     * @return bool
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     */
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    private function checkexisthead()
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    {
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        try {
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            $response         = $this->client->head($this->link);
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            $this->statuscode = $response->getStatusCode();
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            $this->isExist    = (($this->statuscode == 200) || ($this->statuscode == 204));
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            return $this->isExist;
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        } catch (ClientException $e) {
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            $this->statuscode = $e->getCode();
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        } catch (RequestException $e) {
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        } 
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        $this->isExist = false;
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        return false;
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    }
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    /**
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     * @return bool
@@ 120-136 (lines=17) @@
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    /**
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     * @return bool
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     */
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    private function checkexistget()
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    {
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        try {
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            $response         = $this->client->get($this->link);
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            $this->statuscode = $response->getStatusCode();
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            $this->isExist    = (($this->statuscode == 200) || ($this->statuscode == 204));
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            return $this->isExist;
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        } catch (ClientException $e) {
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            $this->statuscode = $e->getCode();
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        } catch (RequestException $e) {
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        } 
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        $this->isExist = false;
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        return false;
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    }
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    /**
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     *