How to modify the content security policy (CSP) response header for Safari App Extension?

Hi All,

Is there any way to modify the content security policy (CSP) response header for Safari App Extension?

I explored, It is possible to implement for google chrome extension.

for more details reference link: https://developer.chrome.com/extensions/webRequest

I am also looking same implementation for Safari App Extension.

Is it possible to implement in same way or any another alternative solution?

Thanks in advance.