public void forTree_acceptsDirectedGraph() throws Exception {
    MutableGraph<String> graph = GraphBuilder.directed().build();
    graph.putEdge("a", "b");

    Traverser.forTree(graph); // Does not throw
  }

  @Test
  public void forTree_withUndirectedGraph_throws() throws Exception {
    MutableGraph<String> graph = GraphBuilder.undirected().build();
    graph.putEdge("a", "b");

        }
    }

    private boolean isExceptPrivateAccessible(Method method) {
        // to avoid warning of JDK-internal access at Java11
        // Lasta Di does not need private access to the classes
        final String fqcn = method.getDeclaringClass().getName();
        return fqcn.startsWith("java.") || fqcn.startsWith("jdk.") || fqcn.startsWith("com.sun.") || fqcn.startsWith("sun.");

     */
    int O_RDWR = 0x03;
    /**
     * Open in append mode.
     */
    int O_APPEND = 0x04;

    // Open Function Encoding
    /**
     * Create file if it does not exist.
     */
    int O_CREAT = 0x0010;
    /**
     * Fail if the file exists.
     */
    int O_EXCL = 0x0020;
    /**
     * Truncate file if it exists.
     */
    int O_TRUNC = 0x0040;

        return userResponse.request
      }

      else -> return null
    }
  }

  private fun buildRedirectRequest(
    userResponse: Response,
    method: String,
  ): Request? {
    // Does the client allow redirects?
    if (!client.followRedirects) return null

    val location = userResponse.header("Location") ?: return null
    // Don't follow redirects to unsupported protocols.

                size = sfd.getInitialSize();
                resumeKey = rkresp.getResumeKey();

                // start with some reasonably safe defaults, the server will till us if it does not like it
                // can we resume this if we loose the file descriptor?

                int maxChunks = 256;
                int maxChunkSize = 1024 * 1024;
                int byteLimit = 16 * 1024 * 1024;

    }
    
    public void initializeMultiChannel() throws IOException {
        // Check server capability
        if (!session.getServer().supportsMultiChannel()) {
            log.info("Server does not support multi-channel");
            return;
        }
        
        // Query network interfaces from server
        queryRemoteInterfaces();
        
        // Discover local interfaces

     */
    private String changefreq;

    /**
     * The priority of this URL relative to other URLs on your site. Valid
     * values range from 0.0 to 1.0. This value does not affect how your pages
     * are compared to pages on other sites—it only lets the search engines know
     * which pages you deem most important for the crawlers.
     *
     * The default priority of a page is 0.5.

     * to this stream will result in response data recieved in the
     * <code>InputStream</code> associated with this Named Pipe
     * instance (unless of course it does not elicite a response or the pipe is write-only).
     * @return the output stream for writing to this pipe
     * @throws IOException if an I/O error occurs
     */

 * `::1` will reach the IPv6 server.
 *
 * By orchestrating two different servers with the same port but different IP addresses, we can
 * test what OkHttp does when both are reachable, or if only one is reachable.
 *
 * This test only runs on host machines that have both IPv4 and IPv6 addresses for localhost.
 */
@Timeout(30)
class FastFallbackTest {
  @RegisterExtension

    reject.set(false);
    executor.execute(task);
    assertEquals(1, numCalls.get());
  }

  /*
   * Under Android, MyError propagates up and fails the test?
   *
   * TODO(b/218700094): Does this matter to prod users, or is it just a feature of our testing
   * environment? If the latter, maybe write a custom Executor that avoids failing the test when it
   * sees an Error?
   */
  @AndroidIncompatible