func (p *StartScreencastParams) Do(ctx context.Context) (err error) {
	return cdp.Execute(ctx, CommandStartScreencast, p, nil)
}
func (p *StartScreencastParams) Do(ctx context.Context) (err error) {
	return cdp.Execute(ctx, CommandStartScreencast, p, nil)
}
// Do executes Page.startScreencast against the provided context.