return input == null ? null : input.charAt(0);
        }
      };

  @Override
  protected Table<String, Integer, Character> create(@Nullable Object... data) {
    Table<String, Integer, String> table = HashBasedTable.create();
    checkArgument(data.length % 3 == 0);
    for (int i = 0; i < data.length; i += 3) {
      String value = (data[i + 2] == null) ? null : (data[i + 2] + "transformed");

  public void testContains_nullNotContainedButAllowed() {
    assertFalse("containsValue(null) should return false", getMap().containsValue(null));
  }

  @MapFeature.Require(absent = ALLOWS_NULL_VALUE_QUERIES)
  public void testContains_nullNotContainedAndUnsupported() {
    expectNullValueMissingWhenNullValuesUnsupported(
        "containsValue(null) should return false or throw");
  }

  @MapFeature.Require(ALLOWS_NULL_VALUES)

     * @return a list of model problems encountered, never {@code null}
     */
    List<ModelProblem> getProblems();

    boolean hasErrors();

    boolean hasFatalErrors();

    default void add(BuilderProblem.Severity severity, ModelProblem.Version version, String message) {
        add(severity, version, message, null, null);
    }

    default void add(

    assertEquals("null [null, null]", Strings.lenientFormat("%s", null, null, null));
    assertEquals("null [5, 6]", Strings.lenientFormat(null, 5, 6));
    assertEquals("null", Strings.lenientFormat("%s", (Object) null));
  }

  @J2ktIncompatible // TODO(b/319404022): Allow passing null array as varargs
  public void testLenientFormat_nullArrayVarargs() {

     * bytecode rewriting that checks for any null value that passes through an API with a
     * known-non-null type? But that particular problem might not arise here, since we're not
     * actually reading from the fields in any case in which they might be null (as proven by the
     * requireNonNull checks below). Plus, we're *already* lying here, since newHeader passes a null

            this.releases = new LinkedList<>();
        }
        else {
            this.acquires = null;
            this.releases = null;
        }
    }


    boolean matches ( String shr, String servc ) {
        return this.share.equalsIgnoreCase(shr) && ( servc == null || servc.startsWith("??") || this.service.equalsIgnoreCase(servc) );
    }


    @Override

            if (installationToolchainsFileStr != null) {
                installationToolchainsFile = context.cwdResolver.apply(installationToolchainsFileStr);
            }
        }

        context.mavenExecutionRequest.setInstallationToolchainsFile(
                installationToolchainsFile != null ? installationToolchainsFile.toFile() : null);
        context.mavenExecutionRequest.setUserToolchainsFile(

In most setups this will keep the scanner slow enough to not impact overall system performance. Setting the `delay` key to a *lower* value will make the scanner faster and setting it to 0 will make the scanner run at full speed (not recommended in production). Setting it to a higher value will make the scanner slower, consuming less resources with the trade off of not collecting metrics for operations like healing and disk usage as fast.

```

    void testMessage() {
        DefaultModelProblem pb1 =
                new DefaultModelProblem("message1", ModelProblem.Severity.ERROR, null, "source", 0, 0, "modelId", null);
        DefaultModelProblem pb2 =
                new DefaultModelProblem("message2", ModelProblem.Severity.ERROR, null, "source", 0, 0, "modelId", null);
        String msg = ModelBuildingException.toMessage("modelId", Arrays.asList(pb1, pb2));
        assertEquals(

     */
    @Deprecated
    public DefaultArtifactHandler() {
        this.type = null;
    }

    public DefaultArtifactHandler(final String type) {
        this(type, null, null, null, null, false, null, false);
    }

    @SuppressWarnings("checkstyle:ParameterNumber")
    public DefaultArtifactHandler(
            final String type,