example
const container = new BubbleConteiner();
const textBox = new Box('vertical').addContent(new TextContent('Hello,World'));
container.setBodyBlock(textBox)
const ret = Client.Helper().setContainerType(container).dump();
result
{
"type":"bubble",
"body":{
"type":"box",
"layout":"vertical",
"contents":[
{
"type":"text",
"text":"Hello,World"
}
]
}
}