return headMap(toKey, false);
  }

  /**
   * This method returns a {@code ImmutableSortedMap}, consisting of the entries whose keys are less
   * than (or equal to, if {@code inclusive}) {@code toKey}.
   *
   * <p>The {@link SortedMap#headMap} documentation states that a submap of a submap throws an
   * {@link IllegalArgumentException} if passed a {@code toKey} greater than an earlier {@code

      }
    }

    @Override
    public NavigableMap<K, V> headMap(K toKey, boolean inclusive) {
      synchronized (mutex) {
        return navigableMap(delegate().headMap(toKey, inclusive), mutex);
      }
    }

    @Override
    public SortedMap<K, V> headMap(K toKey) {
      return headMap(toKey, false);
    }

    @Override
    @CheckForNull

      }
    }

    @Override
    public NavigableMap<K, V> headMap(K toKey, boolean inclusive) {
      synchronized (mutex) {
        return navigableMap(delegate().headMap(toKey, inclusive), mutex);
      }
    }

    @Override
    public SortedMap<K, V> headMap(K toKey) {
      return headMap(toKey, false);
    }

    @Override
    @CheckForNull

      if (wrapper.getCause() instanceof Error) {
        throw new ExecutionError((Error) wrapper.getCause());
      }
      /*
       * It's an Exception. (Or it's a non-Error, non-Exception Throwable. From my survey of such
       * classes, I believe that most users intended to extend Exception, so we'll treat it like an
       * Exception.)
       */
      throw new UncheckedExecutionException(wrapper.getCause());
    }

        }
    }

    private void commands(CliRequest cliRequest) {
        if (cliRequest.showErrors) {
            slf4jLogger.info("Error stacktraces are turned on.");
        }

        if (MavenExecutionRequest.CHECKSUM_POLICY_WARN.equals(cliRequest.request.getGlobalChecksumPolicy())) {

      if (wrapper.getCause() instanceof Error) {
        throw new ExecutionError((Error) wrapper.getCause());
      }
      /*
       * It's an Exception. (Or it's a non-Error, non-Exception Throwable. From my survey of such
       * classes, I believe that most users intended to extend Exception, so we'll treat it like an
       * Exception.)
       */
      throw new UncheckedExecutionException(wrapper.getCause());
    }

  fun keyWithCarriageReturnNotPermitted(parameters: Pair<FileSystem, Boolean>) {
    setUp(parameters.first, parameters.second)
    assertFailsWith<IllegalArgumentException> {
      cache.edit("my\rkey")
    }
  }

  @ParameterizedTest
  @ArgumentsSource(FileSystemParamProvider::class)
  fun createNewEntryWithTooFewValuesFails(parameters: Pair<FileSystem, Boolean>) {

// C, we leave the names as is (tv_sec, tv_usec), since that's what
// people are used to seeing in C.  For generated Go code, such as
// package syscall's data structures, we drop a common prefix
// (so sec, usec, which will get turned into Sec, Usec for exporting).
func fieldPrefix(fld []*ast.Field) string {
	prefix := ""
	for _, f := range fld {
		for _, n := range f.Names {
			// Ignore field names that don't have the prefix we're