docs: function walkmap(g, iri, walkIri, s = new Set()) {
    if (s.has(iri)) return s; // Prevents cycles
    if (!g[iri]) return warn(`Resource missing in graph: ${iri}`) || s;
  
    s.add(iri);
  
    if (g[iri][walkIri]) g[iri][walkIri].forEach(wIri => walkmap(g, wIri, walkIri, s));
  
    return s;
  }