docs: function loadMeshJSON(mesh,hashname, args){
    // add/get json store
    var json = mesh.json_store[hashname];
    if(!json)
      json = mesh.json_store[hashname] = {hashname:hashname,paths:[],keys:{}};
  
    if(args.keys)
      json.keys = args.keys;
  
    // only know a single csid/key
    if(args.csid && args.key)
    {
      json.keys[args.csid] = args.key;
    }
  
    // make sure no buffers
    Object.keys(json.keys).forEach(function(csid){
      if(Buffer.isBuffer(json.keys[csid]))
        json.keys[csid] = base32.encode(json.keys[csid]);
    });
  
    return json;
  }