@Override
    public Node toNode() {
        return Node.objectNodeBuilder()
                .withMember(PATH_MEMBER_NAME, path.toString())
                .withMember(SHA_SUM_MEMBER_NAME, shaSum)
                .build();
    }
@return Get the last time the artifact was modified.
smithy-cli/src/main/java/software/amazon/smithy/cli/dependencies/ResolvedArtifact.java