*/
  protected abstract I newTargetIterator();

  /**
   * Override this to verify anything after running a list of Stimuli.
   *
   * <p>For example, verify that calls to remove() actually removed the correct elements.
   *
   * @param elements the expected elements passed to the constructor, as mutated by {@code
   *     remove()}, {@code set()}, and {@code add()} calls
   */
  protected void verify(List<E> elements) {}

            if ((n != byteCount) && (LogStream.level >= 5)) {
                log.println("byteCount=" + byteCount + " but readBytesWireFormat returned " + n);
            }
            // Don't think we can rely on n being correct here. Must use byteCount.
            // Last paragraph of section 3.13.3 eludes to this.

            bufferIndex += byteCount;
        }

        length = bufferIndex - start;
        return length;

		return errSftpCertWithoutPrincipals
	}

	// Verify that certificate provided by user is issued by trusted CA,
	// username in authentication request matches to identities in certificate
	// and that certificate type is correct.
	checker := ssh.CertChecker{}
	checker.IsUserAuthority = func(k ssh.PublicKey) bool {
		return subtle.ConstantTimeCompare(globalSFTPTrustedCAPubkey.Marshal(), k.Marshal()) == 1
	}

	}
	if x&xlFlagInlineData != 0 {
		if s.Len() > 0 {
			s.WriteByte(',')
		}
		s.WriteString("Inline")
	}
	return s.String()
}

// checkXL2V1 will check if the metadata has correct header and is a known major version.
// The remaining payload and versions are returned.
func checkXL2V1(buf []byte) (payload []byte, major, minor uint16, err error) {
	if len(buf) <= 8 {

            assertTrue("Result for 1 day should be greater than 0 days", result1 > result0);

            // Verify that the differences are approximately correct
            long diff1 = result1 - result0;
            long diff7 = result7 - result0;
            assertTrue("1 day should be approximately ONE_DAY_IN_MILLIS", Math.abs(diff1 - Constants.ONE_DAY_IN_MILLIS) < 10000);

   */
  protected abstract I newTargetIterator();

  /**
   * Override this to verify anything after running a list of Stimuli.
   *
   * <p>For example, verify that calls to remove() actually removed the correct elements.
   *
   * @param elements the expected elements passed to the constructor, as mutated by {@code
   *     remove()}, {@code set()}, and {@code add()} calls
   */
  protected void verify(List<E> elements) {}

   * ```
   *
   * But this chain is wrong because the attackerSwitch certificate is being used in a CA role even
   * though it is not a CA certificate. There are pinned certificates in the chain! The correct
   * chain is much shorter because it skips the non-CA certificate.
   *
   * ```
   *   attackerCa
   *     -> attackerIntermediate
   *         -> phonyVictim
   * ```
   *

    return file(new File(first), more);
  }

  /** Returns a {@code File} object for the given path parts. */
  private static File file(File first, String... more) {
    // not very efficient, but should definitely be correct
    File file = first;
    for (String name : more) {
      file = new File(file, name);
    }
    return file;
  }

	BytesDone   uint64
	BytesFailed uint64

	// Last object scanned.
	Bucket string `json:"-"`
	Object string `json:"-"`

	// Numbers when current bucket started healing,
	// for resuming with correct numbers.
	ResumeItemsHealed  uint64 `json:"-"`
	ResumeItemsFailed  uint64 `json:"-"`
	ResumeItemsSkipped uint64 `json:"-"`
	ResumeBytesDone    uint64 `json:"-"`
	ResumeBytesFailed  uint64 `json:"-"`

    addEdge(N1, N2, E12);
    addEdge(N1, N2, E12_A);

    assertThat(network.edgesConnecting(N1, N2)).containsExactly(E12, E12_A);
    // Passed nodes should be in the correct edge direction, first is the
    // source node and the second is the target node
    assertThat(network.edgesConnecting(N2, N1)).isEmpty();
  }

  @Test
  public void edgesConnecting_parallelEdges_undirected() {