请问如何用Jacob设置表格的垂直对齐方式。以下是设置水平对齐方式的:
    public void setAlignment(int alignmentType) {    
            
        logger.debug("设置当前Selection 位置方式...");    
        if(this.alignment == null){    
            this.getAlignment();    
        }    
        Dispatch.put(this.alignment, "Alignment", alignmentType);    
    }  
    public Dispatch getAlignment(){    
            
        logger.debug("获取当前选择区域的对齐方式...");    
        if(this.selection == null){    
            this.getSelection();    
        }    
        this.alignment = Dispatch.get(this.selection, "ParagraphFormat").toDispatch();    
        return this.alignment;    
    }