_propDict)) { if (is_a($this->_propDict["line"], "\Microsoft\Graph\Model\WorkbookChartLineFormat") || is_null($this->_propDict["line"])) { return $this->_propDict["line"]; } else { $this->_propDict["line"] = new WorkbookChartLineFormat($this->_propDict["line"]); return $this->_propDict["line"]; } } return null; } /** * Sets the line * Represents chart line formatting. Read-only. * * @param WorkbookChartLineFormat $val The line * * @return WorkbookChartGridlinesFormat */ public function setLine($val) { $this->_propDict["line"] = $val; return $this; } }