// FIXME: this seems clunky, maybe there is a better way to do this.

	if ts, ok := d.rtmap[symIdx]; ok {
		if def, ok := d.tdmap[ts]; ok {
			return def
		}
		d.linkctxt.Errorf(ts, "internal error: no entry for sym %d in tdmap\n", ts)
		return 0
	}
	d.linkctxt.Errorf(symIdx, "internal error: no entry for sym %d in rtmap\n", symIdx)
	return 0
}

// Holds a map of recently logged errors.
type logOnceType struct {
	IDMap map[string]onceErr
	sync.Mutex
}

func (l *logOnceType) logOnceConsoleIf(ctx context.Context, subsystem string, err error, id string, errKind ...interface{}) {
	if err == nil {
		return
	}

	nerr := unwrapErrs(err)
	l.Lock()
	shouldLog := true
	prev, ok := l.IDMap[id]
	if !ok {
		l.IDMap[id] = onceErr{
			Err:   nerr,
			Count: 1,
		}

    def "checkValidExcludeRuleMap is true if group or module is defined"() {
        expect:
        parser.parseNotation(WrapUtil.toMap(ExcludeRule.GROUP_KEY, "aGroup"));
        parser.parseNotation(WrapUtil.toMap(ExcludeRule.MODULE_KEY, "aModule"));

        when:
        parser.parseNotation(WrapUtil.toMap("unknownKey", "someValue"))

        then:
        thrown(InvalidUserDataException)
    }

import java.io.Reader;
import java.io.StringReader;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.Collections;

import static org.gradle.util.internal.WrapUtil.toMap;
import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.CoreMatchers.instanceOf;
import static org.hamcrest.CoreMatchers.sameInstance;
import static org.hamcrest.MatcherAssert.assertThat;

    }

    private static Map<AccessorKey, ReplacedAccessor> mapOldAccessorsOfUpgradedProperties(List<UpgradedProperty> upgradedProperties) {
        return upgradedProperties.stream()
            .flatMap(UpgradePropertiesRuleSetup::mapOldAccessorsOfUpgradedProperty)
            .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));
    }

        return map != null ? Collections.unmodifiableMap(map) : Collections.emptyMap();
    }

    private static Map<String, String> toMap(Properties properties) {
        if (properties != null && !properties.isEmpty()) {
            return properties.entrySet().stream()
                    .collect(Collectors.toMap(e -> String.valueOf(e.getKey()), e -> String.valueOf(e.getValue())));

        } else {
            return null;
        }

    @Test
    public void testAdd() {
        DefaultExcludeRuleContainer excludeRuleContainer = new DefaultExcludeRuleContainer();
        Map<String, String> excludeRuleArgs1 = WrapUtil.toMap("group", "value1");
        Map<String, String> excludeRuleArgs2 = WrapUtil.toMap("module", "value2");
        excludeRuleContainer.add(excludeRuleArgs1);
        excludeRuleContainer.add(excludeRuleArgs2);

        return map != null ? Collections.unmodifiableMap(map) : Collections.emptyMap();
    }

    private static Map<String, String> toMap(Properties properties) {
        if (properties != null && !properties.isEmpty()) {
            return properties.entrySet().stream()
                    .collect(Collectors.toMap(e -> String.valueOf(e.getKey()), e -> String.valueOf(e.getValue())));

        } else {
            return null;
        }

            .collect(Collectors.toMap(AssessedAttribute::getAttribute, AssessedAttribute::getProvided, (a, b) -> a));
        @SuppressWarnings("DataFlowIssue") Map<Attribute<?>, ?> incompatibleAttrs = assessedCandidate.getIncompatibleAttributes().stream()
            .collect(Collectors.toMap(AssessedAttribute::getAttribute, AssessedAttribute::getProvided, (a, b) -> a));

			return project.id, false, nil
		}
		idMap[project.id] = true
	}
	var needToAddProjid = true
	for _, projid := range list.projid {
		idMap[projid.id] = true
		if projid.id == id && id != common.BadQuotaID {
			needToAddProjid = false
		}
	}
	var err error
	if id == common.BadQuotaID {
		id, err = findAvailableQuota(path, idMap)
		if err != nil {
			return common.BadQuotaID, false, err