if (StringUtil.isBlank(userCode)) {
            return null;
        }

        if (fessConfig.isValidUserCode(userCode)) {
            request.setAttribute(Constants.USER_CODE, userCode);
            return userCode;
        }
        return null;
    }

    protected String getId() {
        return UUID.randomUUID().toString().replace("-", StringUtil.EMPTY);
    }

            return evaluate(expression, null);
        }

        public File alignToBaseDirectory(File file) {
            if (translator != null) {
                return translator.translatePath(file);
            }
            return file;
        }
    }

    static class XmlConverter extends AbstractConfigurationConverter {
        @Override
        public boolean canConvert(Class<?> type) {

        return DoubleMath.factorial(n);
      }

      @Override
      public int gcdInt(int a, int b) {
        return IntMath.gcd(a, b);
      }

      @Override
      public long gcdLong(long a, long b) {
        return LongMath.gcd(a, b);
      }

      @Override
      public long binomialCoefficient(int n, int k) {
        return LongMath.binomial(n, k);
      }

    }

    int writeSetupWireFormat( byte[] dst, int dstIndex ) {
        return 0;
    }
    int writeParametersWireFormat( byte[] dst, int dstIndex ) {
        return 0;
    }
    int writeDataWireFormat( byte[] dst, int dstIndex ) {
        return 0;
    }
    int readSetupWireFormat( byte[] buffer, int bufferIndex, int len ) {
        return 0;
    }
    int readParametersWireFormat( byte[] buffer, int bufferIndex, int len ) {

        this.extension = extension;
    }

    @Override
    public String getExtension() {
        return extension;
    }

    public void setDirectory(String directory) {
        this.directory = directory;
    }

    @Override
    public String getDirectory() {
        return directory;
    }

    public void setClassifier(String classifier) {
        this.classifier = classifier;
    }

def get_user(db, username: str):
    if username in db:
        user_dict = db[username]
        return UserInDB(**user_dict)


def fake_decode_token(token):
    # This doesn't provide any security at all
    # Check the next version
    user = get_user(fake_users_db, token)
    return user


async def get_current_user(token: Annotated[str, Depends(oauth2_scheme)]):
    user = fake_decode_token(token)

	return DelLoopbackRoutes(cfg)
}

type emptyDeps struct{}

func EmptyNlDeps() NetlinkDependencies {
	return &emptyDeps{}
}

func (r *emptyDeps) AddInpodMarkIPRule(cfg *Config) error {
	return nil
}

func (r *emptyDeps) DelInpodMarkIPRule(cfg *Config) error {
	return nil
}

func (r *emptyDeps) AddLoopbackRoutes(cfg *Config) error {
	return nil
}

            return ImmutableList.of(1, 2).iterator();
          }
        };
    assertFailure(tester);
  }

  public void testUnknownOrder() {
    new IteratorTester<Integer>(
        3, MODIFIABLE, newArrayList(1, 2), IteratorTester.KnownOrder.UNKNOWN_ORDER) {
      @Override
      protected Iterator<Integer> newTargetIterator() {
        return newArrayList(2, 1).iterator();
      }

  }

  private int getCount(int index) {
    return (int) (cumulativeCounts[offset + index + 1] - cumulativeCounts[offset + index]);
  }

  @Override
  Entry<E> getEntry(int index) {
    return Multisets.immutableEntry(elementSet.asList().get(index), getCount(index));
  }

  @Override
  @CheckForNull
  public Entry<E> firstEntry() {
    return isEmpty() ? null : getEntry(0);
  }

  @Override

    super(backingSet, backingList);
  }

  @Override
  ImmutableSortedSet<E> delegateCollection() {
    return (ImmutableSortedSet<E>) super.delegateCollection();
  }

  @Override
  public Comparator<? super E> comparator() {
    return delegateCollection().comparator();
  }

  // Override indexOf() and lastIndexOf() to be O(log N) instead of O(N).