async clickBackDrop() {
        await $(this.rootElement)
            .$('[id="drawer-close-button"]')
            .waitForDisplayed();

        const section = await $(this.rootElement).$('section[role="dialog"]');
        const { x, y } = getPointOutsideDrawer(
            await section.getLocation(),
            await section.getSize(),
        );

        await $(this.rootElement)
            .$('[id="drawer-close-button"]')
            .click({ x, y });
    }
Clicks the drawer's backdrop element.
@method