// we are already visiting this vertex, this mean we have a cycle
                int pos = cycle.lastIndexOf(v.label);
                List<String> ret = cycle.subList(pos, cycle.size());
                ret.add(v.label);
                return ret;
            }
        }
        return null;
    }

    static class Vertex {
        final String label;

    }
  }

  static char[] randomChars(Random rand, int size) {
    Set<Character> chars = new HashSet<>(size);
    for (int i = 0; i < size; i++) {
      char c;
      do {
        c = (char) rand.nextInt(Character.MAX_VALUE - Character.MIN_VALUE + 1);
      } while (chars.contains(c));
      chars.add(c);
    }
    char[] retValue = new char[chars.size()];
    int i = 0;
    for (char c : chars) {

			if err != nil {
				err = msgp.WrapError(err)
				return
			}
		}
	}
	return
}

// EncodeMsg implements msgp.Encodable
func (z *WalkDirOptions) EncodeMsg(en *msgp.Writer) (err error) {
	// map header, size 8
	// write "Bucket"
	err = en.Append(0x88, 0xa6, 0x42, 0x75, 0x63, 0x6b, 0x65, 0x74)
	if err != nil {
		return
	}
	err = en.WriteString(z.Bucket)
	if err != nil {
		err = msgp.WrapError(err, "Bucket")
		return

    int decode( byte[] buf, int bi ) {
        allow = buf[bi++] == (byte)0x00;
        flags = buf[bi++] & 0xFF;
        int size = ServerMessageBlock.readInt2(buf, bi);
        bi += 2;
        access = ServerMessageBlock.readInt4(buf, bi);
        bi += 4;
        sid = new SID(buf, bi);
        return size;
    }

    void appendCol(StringBuffer sb, String str, int width) {
        sb.append(str);

    }

    private static boolean repositoriesEquals(List<ArtifactRepository> r1, List<ArtifactRepository> r2) {
        if (r1.size() != r2.size()) {
            return false;
        }

        for (Iterator<ArtifactRepository> it1 = r1.iterator(), it2 = r2.iterator(); it1.hasNext(); ) {
            if (!repositoryEquals(it1.next(), it2.next())) {

                } else {
                    location = targetLocations.get(index);
                }
                locations.put(Integer.valueOf(locations.size()), location);
            }
        }
        result.setLocations(locations);

        return result;
    } // -- InputLocation merge( InputLocation, InputLocation, java.util.Collection )

    /**

                        } else {
                            list.addAll(processRepository(key, url));
                        }
                    }
                    return list.toArray(new Artifact[list.size()]);
                }
            });

    public Artifact[] getAvailableArtifacts(final ArtifactType artifactType) {
        try {
            return availableArtifacts.get(artifactType);

      return 1.0;
    }
    if (value <= -1.0) {
      return -1.0;
    }
    return value;
  }

  // Serialization helpers

  /** The size of byte array representation in bytes. */
  private static final int BYTES = Stats.BYTES * 2 + Double.SIZE / Byte.SIZE;

  /**
   * Gets a byte array representation of this instance.
   *

    Adapters.choice(
      generalNameDnsName,
      generalNameIpAddress,
      Adapters.ANY_VALUE,
    )

  /**
   * ```
   * SubjectAltName ::= GeneralNames
   *
   * GeneralNames ::= SEQUENCE SIZE (1..MAX) OF GeneralName
   * ```
   */
  private val subjectAlternativeName: BasicDerAdapter<List<Pair<DerAdapter<*>, Any?>>> =
    generalName.asSequenceOf()

  /**

   */
  @CanIgnoreReturnValue
  public static UnsignedLong valueOf(BigInteger value) {
    checkNotNull(value);
    checkArgument(
        value.signum() >= 0 && value.bitLength() <= Long.SIZE,
        "value (%s) is outside the range for an unsigned long value",
        value);
    return fromLongBits(value.longValue());
  }

  /**