List<@Nullable String> list = newArrayList("a", null, "b", null, "a", null);
    assertEquals(2, frequency(list.iterator(), "a"));
    assertEquals(1, frequency(list.iterator(), "b"));
    assertEquals(0, frequency(list.iterator(), "c"));
    assertEquals(0, frequency(list.iterator(), 4.2));
    assertEquals(3, frequency(list.iterator(), null));
  }

  @GwtIncompatible // slow (~4s)

    @BeforeEach
    void setUp() throws Exception {
        policy = new DefaultGraphConflictResolutionPolicy();
        e1 = new MetadataGraphEdge("1.1", true, null, null, 2, 1);
        e2 = new MetadataGraphEdge("1.2", true, null, null, 3, 2);
        e3 = new MetadataGraphEdge("1.2", true, null, null, 2, 3);
    }

    // ------------------------------------------------------------------------------------------
    @Test

        pageSize = getDefaultPageSize();
        currentPageNumber = getDefaultCurrentPageNumber();

        id = null;
        port = null;
        username = null;
        fileConfigId = null;
        createdBy = null;
        createdTime = null;
        versionNo = null;

    }

    protected int getDefaultCurrentPageNumber() {
        return DEFAULT_CURRENT_PAGE_NUMBER;
    }

        pageSize = getDefaultPageSize();
        currentPageNumber = getDefaultCurrentPageNumber();

        id = null;
        port = null;
        username = null;
        webConfigId = null;
        createdBy = null;
        createdTime = null;
        versionNo = null;

    }

    protected int getDefaultCurrentPageNumber() {
        return DEFAULT_CURRENT_PAGE_NUMBER;
    }

        pageSize = getDefaultPageSize();
        currentPageNumber = getDefaultCurrentPageNumber();

        id = null;
        urlExpr = null;
        boostExpr = null;
        sortOrder = null;
        createdBy = null;
        createdTime = null;
        versionNo = null;

    }

    public int getAllRecordCount() {
        return allRecordCount;
    }

            final BytesRef lowerTerm = termRangeQuery.getLowerTerm();
            queryBuf.append(lowerTerm != null ? "*".equals(Term.toString(lowerTerm)) ? "\\*" : Term.toString(lowerTerm) : "*");
            queryBuf.append(" TO ");
            final BytesRef upperTerm = termRangeQuery.getUpperTerm();
            queryBuf.append(upperTerm != null ? "*".equals(Term.toString(upperTerm)) ? "\\*" : Term.toString(upperTerm) : "*");

                            "required": False,
                            "schema": IsDict(
                                {
                                    "anyOf": [{"type": "string"}, {"type": "null"}],
                                    "title": "Q",
                                }
                            )
                            | IsDict(

                            "required": False,
                            "schema": IsDict(
                                {
                                    "anyOf": [{"type": "string"}, {"type": "null"}],
                                    "title": "Q",
                                }
                            )
                            | IsDict(

        if (profileActivation != null) {
            Activation activation = new Activation();

            activation.setActiveByDefault(profileActivation.isActiveByDefault());

            activation.setJdk(profileActivation.getJdk());

            org.apache.maven.profiles.ActivationProperty profileProp = profileActivation.getProperty();

            if (profileProp != null) {

        try {
            Object result = null;
            if (null != value && !value.isEmpty()) {
                if (evaluator instanceof TypeAwareExpressionEvaluator) {
                    result = ((TypeAwareExpressionEvaluator) evaluator).evaluate(value, type);
                } else {
                    result = evaluator.evaluate(value);
                }
            }
            if (null == result && configuration.getChildCount() == 0) {