@Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        } else if (!(o instanceof ResolvedArtifact)) {
            return false;
        }
        ResolvedArtifact artifact = (ResolvedArtifact) o;
        return path.equals(artifact.path)
                && shaSum.equals(artifact.shaSum)
                && coordinates.equals(artifact.coordinates);
    }
@return Get the last time the artifact was modified.
smithy-cli/src/main/java/software/amazon/smithy/cli/dependencies/ResolvedArtifact.java