private final String location;
    private final List<InputSource> inputs;
    private final InputLocation importedFrom;

    public InputSource(String modelId, String location) {
        this(modelId, location, null);
    }

    public InputSource(String modelId, String location, InputLocation importedFrom) {
        this.modelId = modelId;
        this.location = location;
        this.inputs = null;

        return this.modelId;
    } // -- String getModelId()

    /**
     * Set the path/URL of the POM or {@code null} if unknown.
     *
     * @param location
     */
    public void setLocation(String location) {
        this.location = location;
    } // -- void setLocation( String )

    /**
     * Set the identifier of the POM in the format {@code
     * <groupId>:<artifactId>:<version>}.
     *

    <error-code>400</error-code>
    <location>/WEB-INF/view/error/redirect.jsp?type=badRequest</location>
  </error-page>
  <error-page>
    <error-code>401</error-code>
    <location>/WEB-INF/view/error/redirect.jsp?type=badAuth</location>
  </error-page>
  <error-page>
    <error-code>403</error-code>
    <location>/WEB-INF/view/error/redirect.jsp?type=logOut</location>
  </error-page>
  <error-page>

    // -----------/

    /**
     * Gets the location of the specified field in the input
     * source.
     *
     * @param field The key of the field, must not be
     * <code>null</code>.
     * @return The location of the field in the input source or
     * <code>null</code> if unknown.
     */
    public InputLocation getLocation(Object field);
    /**
     * Sets the location of the specified field.
     *

     * This method is the converse of {@link #location()}.
     *
     * @param location identification of a path in the {@code javax.tool} API
     * @return Java path type associated to the given location
     */
    public static Optional<JavaPathType> valueOf(JavaFileManager.Location location) {
        for (JavaPathType type : JavaPathType.values()) {
            if (location.equals(type.location)) {

     *
     * @param content The String representation, may be empty or {@code null}.
     * @param location The location to report for this use, may be {@code null}.
     */
    public StringSource(CharSequence content, String location) {
        this.content = (content != null) ? content.toString() : "";
        this.location = (location != null) ? location : "(memory)";
        this.hashCode = this.content.hashCode();
    }

    @Override

    private final Location location;

    /**
     * @param message the message for the exception
     * @param e the exception itself
     */
    public XmlWriterException(String message, Location location, Exception e) {
        super(message, e);
        this.location = location;
    }

    public Location getLocation() {
        return location;
    }

class PathSource implements ModelSource {

    private final Path path;
    private final String location;

    PathSource(Path path) {
        this(path, null);
    }

    PathSource(Path path, String location) {
        this.path = path.normalize();
        this.location = location != null ? location : this.path.toString();
    }

    @Override
    public Path getPath() {
        return path;
    }

        this.message = message;
        return this;
    }

    public InputLocation getLocation() {
        return location;
    }

    public ModelProblemCollectorRequest setLocation(InputLocation location) {
        this.location = location;
        return this;
    }

     *
     * @param settings The settings' string representation, may be empty or {@code null}.
     * @param location The location to report for this use, may be {@code null}.
     */
    public StringSettingsSource(CharSequence settings, String location) {
        super(settings, location);
    }

    /**
     * Gets the character sequence of this settings source.
     *