Function onMouseDown

packages/react-aria/test/focus/FocusScope.test.js:1178–1180

      function Group(props) {
        let focusManager = useFocusManager();
        let onMouseDown = e => {
          focusManager.focusNext({from: e.target, tabbable: true});
        };
        // eslint-disable-next-line jsx-a11y/no-noninteractive-element-interactions
        return <div {...props} role="group" onMouseDown={onMouseDown} />;
      }