Function deno_fetch::init

pub fn init<P: FetchPermissions + 'static>(
    user_agent: String, 
    root_cert_store: Option<RootCertStore>, 
    proxy: Option<Proxy>, 
    request_builder_hook: Option<fn(_: RequestBuilder) -> RequestBuilder>, 
    unsafely_ignore_certificate_errors: Option<Vec<String>>, 
    client_cert_chain_and_key: Option<(String, String)>
) -> Extension