Function SecCertificateCopyNormalizedSubjectContent 

pub unsafe extern "C-unwind" fn SecCertificateCopyNormalizedSubjectContent(
    certificate: &SecCertificate,
    error: *mut *mut CFError,
) -> Option<CFRetained<CFData>>

👎Deprecated: renamed to SecCertificate::normalized_subject_content

Available on crate features SecBase and SecCertificate only.