Lookup the issuer of certificate in the database.
The issuer property of certificate is not modified, and the two certificates
are not hooked into a chain.
This function can block, use lookup_certificate_issuer_async to perform the lookup operation asynchronously.
| this | |
| certificate | |
| interaction |
used to interact with the user if necessary |
| flags |
flags which affect the lookup operation |
| cancellable |
a Cancellable, or null |
|
a newly allocated issuer TlsCertificate, or null. Use unref to release the certificate. |