) {
          result.addLenient(fieldName, value)
        }
      }

      for (index in 0 until networkHeaders.size) {
        val fieldName = networkHeaders.name(index)
        if (!isContentSpecificHeader(fieldName) && isEndToEnd(fieldName)) {
          result.addLenient(fieldName, networkHeaders.value(index))
        }
      }

      return result.build()
    }

    /**

  public void testCheckNotNull_simple_success() {
    String result = checkNotNull(NON_NULL_STRING);
    assertSame(NON_NULL_STRING, result);
  }

  public void testCheckNotNull_simple_failure() {
    assertThrows(NullPointerException.class, () -> checkNotNull(null));
  }

  public void testCheckNotNull_simpleMessage_success() {
    String result = checkNotNull(NON_NULL_STRING, IGNORE_ME);

  public void testCheckNotNull_simple_success() {
    String result = checkNotNull(NON_NULL_STRING);
    assertSame(NON_NULL_STRING, result);
  }

  public void testCheckNotNull_simple_failure() {
    assertThrows(NullPointerException.class, () -> checkNotNull(null));
  }

  public void testCheckNotNull_simpleMessage_success() {
    String result = checkNotNull(NON_NULL_STRING, IGNORE_ME);

        final List<Map<String, Object>> list = getFileItems(id.isPresent() ? decodePath(id.get()) : null);
        try {
            return asJson(new ApiResult.ApiStorageResponse().items(list).status(ApiResult.Status.OK).result());
        } catch (final ResultOffsetExceededException e) {
            if (logger.isDebugEnabled()) {
                logger.debug(e.getMessage(), e);
            }

      switch (input) {
        case VALID_INPUT_DATA:
          outputFuture.set(RESULT_DATA);
          break;
        case SLOW_OUTPUT_VALID_INPUT_DATA:
          break; // do nothing to the result
        case SLOW_FUNC_VALID_INPUT_DATA:
          funcIsWaitingLatch.countDown();
          awaitUninterruptibly(funcCompletionLatch);
          break;
        case EXCEPTION_DATA:
          throw EXCEPTION;
      }

      switch (input) {
        case VALID_INPUT_DATA:
          outputFuture.set(RESULT_DATA);
          break;
        case SLOW_OUTPUT_VALID_INPUT_DATA:
          break; // do nothing to the result
        case SLOW_FUNC_VALID_INPUT_DATA:
          funcIsWaitingLatch.countDown();
          awaitUninterruptibly(funcCompletionLatch);
          break;
        case EXCEPTION_DATA:
          throw EXCEPTION;
      }

    }

    @Test
    void testClose() throws CIFSException {
        assertFalse(context.isCloseCalled());

        boolean result = context.close();

        assertFalse(result); // AbstractCIFSContext always returns false for close()
        assertTrue(context.isCloseCalled());
    }

    @Test
    void testRun_successfulClose() throws CIFSException {

    checkNotNull(elementsToRemove);
    boolean result = false;
    while (removeFrom.hasNext()) {
      if (elementsToRemove.contains(removeFrom.next())) {
        removeFrom.remove();
        result = true;
      }
    }
    return result;
  }

  /**
   * Removes every element that satisfies the provided predicate from the iterator. The iterator

            }
            throw new CircuitBreakerOpenException("Circuit breaker " + name + " is open");
        }

        try {
            T result = callable.call();
            onSuccess();
            return result;
        } catch (Exception e) {
            onFailure();
            throw e;
        }
    }

    /**
     * Execute a runnable through the circuit breaker

  @Override
  public ImmutableBiMap<V, K> inverse() {
    if (isEmpty()) {
      return ImmutableBiMap.of();
    }
    ImmutableBiMap<V, K> result = inverse;
    return (result == null) ? inverse = new Inverse() : result;
  }

  private final class Inverse extends ImmutableBiMap<V, K> {

    @Override
    public int size() {
      return inverse().size();
    }