newValue:       nil,
		expectError:    true, // populated by defaulting and required when feature is enabled
	}, {
		name:           "feature disabled, nil->nil",
		featureEnabled: false,
		oldValue:       nil,
		newValue:       nil,
		expectError:    false,
	}, {
		name:           "feature disabled, nil->set",
		featureEnabled: false,
		oldValue:       nil,

        private CompilationState compilationState

        CompilationState get() {
            return compilationState
        }

        void set(CompilationState newValue) {
            this.compilationState = newValue
        }

        CompilationState update(ObjectHolder.UpdateAction<CompilationState> updateAction) {
            throw new UnsupportedOperationException()
        }

        for (i in 0 until url.querySize) {
          val parameterName = url.queryParameterName(i)
          val newValue = if (parameterName in queryParamsNameToRedact) "██" else url.queryParameterValue(i)

          addEncodedQueryParameter(parameterName, newValue)
        }
      }.toString()
    }

    private fun logHeader(
      headers: Headers,
      i: Int,
    ) {

   *
   * @param currentValue the current value (of either base or a cell)
   * @param newValue the argument from a user update call
   * @return result of the update function
   */
  abstract long fn(long currentValue, long newValue);

  /**
   * Handles cases of updates involving initialization, resizing, creating new Cells, and/or

        @Override
        public boolean remove(Object key, Object value) {
            throw uoe();
        }

        @Override
        public boolean replace(Object key, Object oldValue, Object newValue) {
            throw uoe();
        }

        @Override
        public Object replace(Object key, Object value) {
            throw uoe();
        }

        @Override

   *
   * @param currentValue the current value (of either base or a cell)
   * @param newValue the argument from a user update call
   * @return result of the update function
   */
  abstract long fn(long currentValue, long newValue);

  /**
   * Handles cases of updates involving initialization, resizing, creating new Cells, and/or

        @Override
        public boolean remove(Object key, Object value) {
            throw uoe();
        }

        @Override
        public boolean replace(Object key, Object oldValue, Object newValue) {
            throw uoe();
        }

        @Override
        public Object replace(Object key, Object value) {
            throw uoe();
        }

        @Override

   *
   * @param currentValue the current value (of either base or a cell)
   * @param newValue the argument from a user update call
   * @return result of the update function
   */
  abstract long fn(long currentValue, long newValue);

  /**
   * Handles cases of updates involving initialization, resizing, creating new Cells, and/or

   *
   * @param currentValue the current value (of either base or a cell)
   * @param newValue the argument from a user update call
   * @return result of the update function
   */
  abstract long fn(long currentValue, long newValue);

  /**
   * Handles cases of updates involving initialization, resizing, creating new Cells, and/or

      Entry<Cut<K>, RangeMapEntry<K, V>> entry = backingItr.next();
      V newValue = remappingFunction.apply(entry.getValue().getValue(), value);
      if (newValue == null) {
        backingItr.remove();
      } else {
        entry.setValue(
            new RangeMapEntry<K, V>(
                entry.getValue().getLowerBound(), entry.getValue().getUpperBound(), newValue));
      }
    }

    entriesByLowerBound.putAll(gaps.build());