a #GByteArray which holds the DER encoded issuer DN.
used to interact with the user if necessary
Flags which affect the lookup operation.
a #GCancellable, or null
a newly allocated list of #GTlsCertificate objects. Use gobject.object.ObjectG.unref on each certificate, and glib.list.List.free on the release the list.
Look up certificates issued by this issuer in the database.
This function can block, use gio.tls_database.TlsDatabase.lookupCertificatesIssuedByAsync to perform the lookup operation asynchronously.