code: function insertRemoteProtocols(cache, ptcls, svc, isClient) {
    Object.keys(ptcls).forEach(function (hash) {
      var ptcl = ptcls[hash];
      var clientSvc, serverSvc;
      if (isClient) {
        clientSvc = svc;
        serverSvc = Service.forProtocol(ptcl);
      } else {
        clientSvc = Service.forProtocol(ptcl);
        serverSvc = svc;
      }
      cache[hash] = new Adapter(clientSvc, serverSvc, hash, true);
    });
  }
docs: Populate a cache from a list of protocols.
  
  @param cache {Object} Cache of adapters.
  @param svc {Service} The local service (either client or server).
  @param ptcls {Array} Array of protocols to insert.
  @param isClient {Boolean} Whether the local service is a client's or
  server's.