function launch() {
    return this.requestHandler.create({
        path: '/session/:sessionId/appium/app/launch',
        method: 'POST'
    });
}
Launch the session for the desired capabilities. Note that this is the companion
to the `autoLaunch=false` capability. This is not for launching arbitrary
apps/activities --- for that use [`startActivity`](/api/mobile/startActivity.html).
This is for continuing the initialization ("launch") process if you have used
`autoLaunch=false`.

<example>
    :launch.js
    it('should launch capability', function () {
        browser.launch();
    });
</example>

@see  https://github.com/appium/appium/blob/master/docs/en/writing-running-appium/other/appium-bindings.md#launch
@type mobile
@for ios, android