如何在SAPUI5的JavaScript对话框中添加关闭按钮？

var oDialog = new sap.m.Dialog({
    title: "对话框标题",
    content: [
        new sap.m.Text({
            text: "对话框内容"
        })
    ]
});

var oCloseButton = new sap.m.Button({
    text: "关闭",
    press: function() {
        oDialog.close();
    }
});

oDialog.setEndButton(oCloseButton);

oDialog.open();

var oDialog = new sap.m.Dialog({
    title: "对话框标题",
    content: [
        new sap.m.Text({
            text: "对话框内容"
        })
    ]
});

var oCloseButton = new sap.m.Button({
    text: "关闭",
    press: function() {
        oDialog.close();
    }
});

oDialog.setEndButton(oCloseButton);
oDialog.open();