Function SecIdentitySetPreference 

pub unsafe extern "C-unwind" fn SecIdentitySetPreference(
    identity: &SecIdentity,
    name: &CFString,
    key_usage: CSSM_KEYUSE,
) -> i32

👎Deprecated: renamed to SecIdentity::set_preference

Available on crate features SecBase and SecIdentity and cssmconfig and cssmtype only.