import org.asamk.signal.AttachmentInvalidException;
import org.signal.libsignal.metadata.certificate.CertificateValidator;
import org.whispersystems.libsignal.IdentityKey;
import org.asamk.signal.AttachmentInvalidException;
import org.signal.libsignal.metadata.certificate.CertificateValidator;
import org.whispersystems.libsignal.IdentityKey;