Function gio_sys::g_tls_database_lookup_certificate_issuer_async

pub unsafe extern "C" fn g_tls_database_lookup_certificate_issuer_async(
    self_: *mut GTlsDatabase, 
    certificate: *mut GTlsCertificate, 
    interaction: *mut GTlsInteraction, 
    flags: GTlsDatabaseLookupFlags, 
    cancellable: *mut GCancellable, 
    callback: GAsyncReadyCallback, 
    user_data: gpointer
)