Code Duplication    Length = 8-8 lines in 2 locations

src/Message/Response.php 2 locations

@@ 65-72 (lines=8) @@
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     *
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     * @return string|null
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     */
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    public function getTransactionReference()
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    {
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        if (isset($this->data['payment']['hash'])) {
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            return $this->data['payment']['hash'];
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        }
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        return null;
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    }
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    /**
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     * Get the transaction id.
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     *
@@ 78-85 (lines=8) @@
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     *
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     * @return string|null
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     */
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    public function getTransactionId()
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    {
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        if (isset($this->data['payment']['merchant_payment_code'])) {
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            return $this->data['payment']['merchant_payment_code'];
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        }
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        return null;
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    }
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    /**
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     * Get the error message from the response.