Adding serviceautostartprovider via code (in applicationHost.config) C#

I  would like to know how to add serviceautostartprovider's entry in applicationHost.config file.

I would like to register my custom Preload client. I know how to edit and register manually. But I need to do it via code. Are there any APIs for doing that.  I would like to add this code:

<serviceAutoStartProviders><add name="RegisterApplicationHandler" type="X.RegisterApplicationHandler, X"/></serviceAutoStartProviders>

Because for setting "PreloadEnabled" and other attributes, it is possible via code.