* @return the hint about the source of the problem or an empty string if unknown, never {@code null}
     */
    @Nonnull
    String getSource();

    /**
     * Gets the one-based index of the line containing the problem. The line number should refer to some text file that
     * is given by {@link #getSource()}.
     *
     * @return the one-based index of the line containing the problem or a non-positive value if unknown
     */

        this.lineNumber = location.getLineNumber();
        this.columnNumber = location.getColumnNumber();
        this.source = location.getSource() != null ? new InputSource(location.getSource()) : null;
        this.locations = location.getLocations().isEmpty()
                ? null
                : location.getLocations().entrySet().stream()

        if (!problem.getModelId().equals(projectId)) {
            buffer.append(problem.getModelId());

            if (!problem.getSource().isEmpty()) {
                if (!buffer.isEmpty()) {
                    buffer.append(", ");
                }
                buffer.append(problem.getSource());
            }
        }

        if (problem.getLineNumber() > 0) {
            if (!buffer.isEmpty()) {

            return read(in, isStrict(options), getSource(options));
        }
    }

    @Override
    public Model read(InputStream input, Map<String, ?> options) throws IOException {
        Objects.requireNonNull(input, "input cannot be null");

        try (XmlStreamReader in = ReaderFactory.newXmlReader(input)) {
            return read(in, isStrict(options), getSource(options));
        }
    }

import javax.inject.Inject

@CacheableTask
abstract class Docbook2Xhtml extends SourceTask {
    @Override
    @PathSensitive(PathSensitivity.RELATIVE)
    FileTree getSource() {
        return super.getSource()
    }

    @PathSensitive(PathSensitivity.RELATIVE)
    @InputDirectory
    abstract DirectoryProperty getStylesheetDirectory();

    @PathSensitive(PathSensitivity.RELATIVE)
    @InputFiles

        assertEquals("", problem.getSource());

        problem = new DefaultProblem(null, null, "", -1, -1, null);
        assertEquals("", problem.getSource());

        problem = new DefaultProblem(null, null, "SOURCE", -1, -1, null);
        assertEquals("SOURCE", problem.getSource());
    }

    @Test
    void testGetLocation() {

     *
     * @return The hint about the source of the problem or an empty string if unknown, never {@code null}.
     */
    String getSource();

    /**
     * Gets the one-based index of the line containing the problem. The line number should refer to some text file that
     * is given by {@link #getSource()}.
     *
     * @return The one-based index of the line containing the problem or a non-positive value if unknown.
     */

	opsID   string
}

// Lock - block until write lock is taken or timeout has occurred.
func (di *distLockInstance) GetLock(ctx context.Context, timeout *dynamicTimeout) (LockContext, error) {
	lockSource := getSource(2)
	start := UTCNow()

	newCtx, cancel := context.WithCancel(ctx)
	if !di.rwMutex.GetLock(newCtx, cancel, di.opsID, lockSource, dsync.Options{
		Timeout:       timeout.Timeout(),

        Profile existing = profilesById.get(profileId);
        if (existing != null) {
            logger.warn("Overriding profile: '" + profileId + "' (source: " + existing.getSource()
                    + ") with new instance from source: " + profile.getSource());
        }

        profilesById.put(profile.getId(), profile);

        Activation activation = profile.getActivation();

        assertThrows(
            ConflictingRequirementsException.class, () -> buildTesterRequirements(Tester.class));
    assertThat(e.getConflicts()).containsExactly(FOO);
    assertThat(e.getSource()).isEqualTo(Tester.class.getAnnotation(Require.class));
  }

  public void testBuildTesterRequirements_classClassConflict_inherited() {
    @Require(FOO)
    abstract class BaseTester {}
    @Require(absent = FOO)