content: import React from 'react';
  import { Container, Button, Menu, MenuItem } from '@extjs/ext-react';
  
  export default function RelMenu() {
      return (
          <Container>
              <div>This tests that the menu config is automatically set when a Menu appears inside a Button. The test should verify that the button has a menu.</div>
              <Button text="Menu" itemId="button">
                  <Menu itemId="menu">
                      <MenuItem text="Option 1"/>
                      <MenuItem text="Option 2"/>
                      <MenuItem text="Option 3"/>
                  </Menu>
              </Button>
          </Container>
      )
  }