Method update

mls/src/main/java/org/bouncycastle/mls/protocol/Group.java:1378–1388

(Proposal update, MessageOptions msgOptions)

    }

    public MLSMessage update(Proposal update, MessageOptions msgOptions)
        throws Exception
    {
        AuthenticatedContent contentAuth = sign(
            Sender.forMember(index),
            update,
            msgOptions.authenticatedData,
            msgOptions.encrypt
        );
        return protect(contentAuth, msgOptions.paddingSize);
    }

    public MLSMessage groupContextExtensions(List<Extension> extensions, MessageOptions msgOptions)
        throws Exception