Code Duplication    Length = 14-14 lines in 2 locations

src/PhpSpreadsheet/Chart/GridLines.php 2 locations

@@ 250-263 (lines=14) @@
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     *
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     * @return GridLines
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     */
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    private function setGlowColor($color, $alpha, $type)
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    {
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        if (!is_null($color)) {
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            $this->glowProperties['color']['value'] = (string) $color;
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        }
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        if (!is_null($alpha)) {
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            $this->glowProperties['color']['alpha'] = $this->getTrueAlpha((int) $alpha);
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        }
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        if (!is_null($type)) {
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            $this->glowProperties['color']['type'] = (string) $type;
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        }
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        return $this;
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    }
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    /**
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     * Get Line Style Arrow Parameters
@@ 357-370 (lines=14) @@
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     * @param string $type
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     * @return GridLines
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     */
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    private function setShadowColor($color, $alpha, $type)
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    {
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        if (!is_null($color)) {
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            $this->shadowProperties['color']['value'] = (string) $color;
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        }
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        if (!is_null($alpha)) {
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            $this->shadowProperties['color']['alpha'] = $this->getTrueAlpha((int) $alpha);
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        }
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        if (!is_null($type)) {
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            $this->shadowProperties['color']['type'] = (string) $type;
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        }
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        return $this;
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    }
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    /**
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     * Set Shadow Blur