<Menu
          defaultSelectedKeys={['1']}
          defaultOpenKeys={['sub1']}
          mode="inline"
          theme="dark"
          inlineCollapsed={this.state.collapsed}
        >
          <Menu.Item key="1">
            <Icon type="pie-chart" />
            <span>Option 1</span>
          </Menu.Item>
          <Menu.Item key="2">
            <Icon type="desktop" />
            <span>Option 2</span>
          </Menu.Item>
          <Menu.Item key="3">
            <Icon type="inbox" />
            <span>Option 3</span>
          </Menu.Item>
          <SubMenu
            key="sub1"
            title={
              <span>
                <Icon type="mail" />
                <span>Navigation One</span>
              </span>
            }
          >
            <Menu.Item key="5">Option 5</Menu.Item>
            <Menu.Item key="6">Option 6</Menu.Item>
            <Menu.Item key="7">Option 7</Menu.Item>
            <Menu.Item key="8">Option 8</Menu.Item>
          </SubMenu>
        </Menu>