return null;
            }

            return expression.substring(start, idx);
        }

        public int getPosition() {
            return idx < expression.length() ? idx : EOF;
        }

        // to make tokenizer look pretty in debugger
        @Override
        public String toString() {

        if (features.add(implied)) {
          queue.add(implied);
        }
      }
    }
    return features;
  }

  /**
   * Given a set of features, return a new set of all features directly or indirectly implied by any
   * of them.
   *
   * @param features the set of features whose implications to find
   * @return the implied set of features
   */
  public static Set<Feature<?>> impliedFeatures(Set<Feature<?>> features) {

        return null;
      } else {
        delete(entry);
        entry.prevInKeyInsertionOrder = null;
        entry.nextInKeyInsertionOrder = null;
        return entry.key;
      }
    }

    @Override
    public BiMap<K, V> inverse() {
      return forward();
    }

    @Override
    public Set<V> keySet() {
      return new InverseKeySet();
    }

        if (commandLine.hasOption(CLIManager.FORCE)) {
            return Optional.of(Boolean.TRUE);
        }
        return Optional.empty();
    }

    @Override
    public Optional<Boolean> yes() {
        if (commandLine.hasOption(CLIManager.YES)) {
            return Optional.of(Boolean.TRUE);
        }
        return Optional.empty();
    }

    @Override
    public Optional<List<String>> goals() {

						return
					}
				}
			}
		case "ProxyStats":
			bts, err = z.ProxyStats.UnmarshalMsg(bts)
			if err != nil {
				err = msgp.WrapError(err, "ProxyStats")
				return
			}
		default:
			bts, err = msgp.Skip(bts)
			if err != nil {
				err = msgp.WrapError(err)
				return
			}
		}
	}
	o = bts
	return
}

	if err != nil {
		return cfg, err
	}
	if kduration < 0 {
		return cfg, config.ErrInvalidBatchKeyRotationWorkersWait(nil)
	}

	eduration, err := time.ParseDuration(env.Get(EnvKeyExpirationWorkersWait, kvs.GetWithDefault(ExpirationWorkersWait, DefaultKVS)))
	if err != nil {
		return cfg, err
	}
	if eduration < 0 {
		return cfg, config.ErrInvalidBatchExpirationWorkersWait(nil)
	}

                    return true;
                }
            }
        }
        return false;
    }


/**
 * Return the upcased username hash code.
 */
    public int hashCode() {
        return getName().toUpperCase().hashCode();
    }
/**
 * Return the domain and username in the format:

		return true
	}
	if _, ok := h[xhttp.AmzServerSideEncryptionCustomerKeyMD5]; ok {
		return true
	}
	return false
}

// IsEncrypted returns true if the metadata contains an SSE-C
// entry indicating that the object has been encrypted using
// SSE-C.
func (ssec) IsEncrypted(metadata map[string]string) bool {
	if _, ok := metadata[MetaSealedKeySSEC]; ok {
		return true
	}
	return false
}

   * be declared as a {@code List}.
   *
   * @return the re-serialized object
   * @throws RuntimeException if the specified object was not successfully serialized or
   *     deserialized
   */
  @CanIgnoreReturnValue
  public static <T> T reserialize(T object) {
    return Platform.reserialize(object);
  }

  /**

      /*
       * standardToArray returns `@Nullable Object[]` rather than `Object[]` but because it can
       * be used with collections that may contain null. This collection never contains nulls, so we
       * could return `Object[]`. But this class is private and J2KT cannot change return types in
       * overrides, so we declare `@Nullable Object[]` as the return type.
       */
      return standardToArray();
    }