Severity severity,
            Version version,
            String source,
            int lineNumber,
            int columnNumber,
            String modelId,
            Exception exception) {
        this.message = message;
        this.severity = (severity != null) ? severity : Severity.ERROR;
        this.source = (source != null) ? source : "";
        this.lineNumber = lineNumber;

    }

    public void setSource(String source) {
        this.source = source;
        this.sourceModel = null;
    }

    public void setSource(Model source) {
        this.sourceModel = source;
        this.source = null;

        if (rootModel == null) {
            rootModel = source;
        }
    }

    private String getSource() {
        if (source == null && sourceModel != null) {

	for i := range 10000 {
		nsLk := newNSLock(false)

		// lk1; ref=1
		if !nsLk.lock(ctx, "volume", "path", "source", "opsID", false, time.Second) {
			t.Fatal("failed to acquire lock")
		}

		// lk2
		lk2ch := make(chan struct{})
		go func() {
			defer close(lk2ch)
			nsLk.lock(ctx, "volume", "path", "source", "opsID", false, 1*time.Millisecond)
		}()
		time.Sleep(1 * time.Millisecond) // wait for goroutine to advance; ref=2

            ArtifactMetadataSource source,
            ArtifactFilter filter)
            throws ArtifactResolutionException, ArtifactNotFoundException {
        return resolveTransitively(
                artifacts,
                originatingArtifact,
                Collections.emptyMap(),
                localRepository,
                remoteRepositories,
                source,
                filter);
    }

     *
     * @param target
     * @param sourceDominant
     * @param source
     * @return InputLocation
     */
    public static InputLocation merge(InputLocation target, InputLocation source, boolean sourceDominant) {
        if (source == null) {
            return target;
        } else if (target == null) {
            return source;
        }

            result.setCronExpression(DfTypeUtil.toString(source.get("cronExpression")));
            result.setJobLogging(DfTypeUtil.toBoolean(source.get("jobLogging")));
            result.setName(DfTypeUtil.toString(source.get("name")));
            result.setScriptData(DfTypeUtil.toString(source.get("scriptData")));
            result.setScriptType(DfTypeUtil.toString(source.get("scriptType")));

	if job.Replicate != nil {
		if job.Replicate.Source.Snowball.Disable == nil {
			job.Replicate.Source.Snowball.Disable = ptr(false)
		}
		if job.Replicate.Source.Snowball.Batch == nil {
			job.Replicate.Source.Snowball.Batch = ptr(100)
		}
		if job.Replicate.Source.Snowball.InMemory == nil {
			job.Replicate.Source.Snowball.InMemory = ptr(true)
		}
		if job.Replicate.Source.Snowball.Compress == nil {

    #     [app-solution]/mydbflute/dbflute-0.9.6
    #     [app-solution]/source/[app-solution].sln
    #     [app-solution]/source/[app-project(top-namespace)]/[part-namespace]/AllCommon
    #     [app-solution]/source/[app-project(top-namespace)]/[part-namespace]/BsBhv
    #     [app-solution]/source/[app-project(top-namespace)]/[part-namespace]/...
    #     [app-solution]/source/[app-project(top-namespace)]/Resources/...
    #

    /**
     * Builds the effective toolchains for the specified toolchains sources.
     *
     * @param session the {@link Session}, must not be {@code null}
     * @param installationToolchainsFile The {@link Source} pointing to the installation toolchains, must not be {@code null}
     * @param userToolchainsSource The {@link Source} pointing to the user toolchains, must not be {@code null}

        source = new StringSource("Hello World!", "LOCATION");
        assertEquals("LOCATION", source.getLocation());
    }

    @Test
    void testGetContent() {
        StringSource source = new StringSource(null);
        assertEquals("", source.getContent());

        source = new StringSource("Hello World!", "LOCATION");
        assertEquals("Hello World!", source.getContent());
    }