Code Duplication    Length = 3-5 lines in 2 locations

src/PhpSpreadsheet/Writer/HTML.php 2 locations

@@ 1278-1280 (lines=3) @@
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                        $cssClass .= ' ' . $cell->getDataType();
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                    } else {
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                        if ($cellType == 'th') {
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                            if (isset($this->cssStyles['th.style' . $cell->getXfIndex()])) {
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                                $cssClass = array_merge($cssClass, $this->cssStyles['th.style' . $cell->getXfIndex()]);
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                            }
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                        } else {
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                            if (isset($this->cssStyles['td.style' . $cell->getXfIndex()])) {
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                                $cssClass = array_merge($cssClass, $this->cssStyles['td.style' . $cell->getXfIndex()]);
@@ 1281-1285 (lines=5) @@
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                            if (isset($this->cssStyles['th.style' . $cell->getXfIndex()])) {
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                                $cssClass = array_merge($cssClass, $this->cssStyles['th.style' . $cell->getXfIndex()]);
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                            }
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                        } else {
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                            if (isset($this->cssStyles['td.style' . $cell->getXfIndex()])) {
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                                $cssClass = array_merge($cssClass, $this->cssStyles['td.style' . $cell->getXfIndex()]);
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                            }
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                        }
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                        // General horizontal alignment: Actual horizontal alignment depends on dataType
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                        $sharedStyle = $pSheet->getParent()->getCellXfByIndex($cell->getXfIndex());