There are two ways to configure legends

Method 1, pass in 'Boolean' to set whether to display a legend.

```ts
legend: false; // close legend
```

Method 2, pass in _LegendCfg_ to configure the legend as a whole.

```ts
legend: {
  layout: 'horizontal',
  position: 'right'
}
```

`markdown:docs/common/legend-cfg.en.md`
