@@ -204,7 +204,7 @@ private function writeLegend(XMLWriter $objWriter, Legend $legend = null)
204204 * Write Chart Plot Area.
205205 *
206206 * @param XMLWriter $objWriter XML Writer
207- * @param Worksheet $pSheet
207+ * @param \PhpOffice\PhpSpreadsheet\Worksheet\ Worksheet $pSheet
208208 * @param PlotArea $plotArea
209209 * @param Title $xAxisLabel
210210 * @param Title $yAxisLabel
@@ -394,11 +394,11 @@ private function writeDataLabels(XMLWriter $objWriter, Layout $chartLayout = nul
394394 * @param string $id1
395395 * @param string $id2
396396 * @param bool $isMultiLevelSeries
397- * @param mixed $yAxis
397+ * @param Axis $yAxis
398398 *
399399 * @throws WriterException
400400 */
401- private function writeCategoryAxis ($ objWriter , $ xAxisLabel , $ id1 , $ id2 , $ isMultiLevelSeries , $ yAxis )
401+ private function writeCategoryAxis ($ objWriter , $ xAxisLabel , $ id1 , $ id2 , $ isMultiLevelSeries , Axis $ yAxis )
402402 {
403403 $ objWriter ->startElement ('c:catAx ' );
404404
@@ -515,13 +515,13 @@ private function writeCategoryAxis($objWriter, $xAxisLabel, $id1, $id2, $isMulti
515515 * @param string $id1
516516 * @param string $id2
517517 * @param bool $isMultiLevelSeries
518- * @param mixed $xAxis
519- * @param mixed $majorGridlines
520- * @param mixed $minorGridlines
518+ * @param Axis $xAxis
519+ * @param GridLines $majorGridlines
520+ * @param GridLines $minorGridlines
521521 *
522522 * @throws WriterException
523523 */
524- private function writeValueAxis ($ objWriter , $ yAxisLabel , $ groupType , $ id1 , $ id2 , $ isMultiLevelSeries , $ xAxis , $ majorGridlines , $ minorGridlines )
524+ private function writeValueAxis ($ objWriter , $ yAxisLabel , $ groupType , $ id1 , $ id2 , $ isMultiLevelSeries , Axis $ xAxis , GridLines $ majorGridlines , GridLines $ minorGridlines )
525525 {
526526 $ objWriter ->startElement ('c:valAx ' );
527527
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