e -> e.getKey(),
                                e -> e.getValue() == location ? this : new InputLocation(e.getValue())));
        this.importedFrom = location.getImportedFrom() != null ? new InputLocation(location.getImportedFrom()) : null;
    }

    public InputLocation(int lineNumber, int columnNumber) {
        this.lineNumber = lineNumber;
        this.columnNumber = columnNumber;

    public InputSource(org.apache.maven.api.model.InputSource source) {
        this.modelId = source.getModelId();
        this.location = source.getLocation();
        this.importedFrom = source.getImportedFrom() != null ? new InputLocation(source.getImportedFrom()) : null;
    }

    // -----------/
    // - Methods -/
    // -----------/

    /**
     * Method clone.
     *
     * @return InputSource
     */

    /**
     * Gets the parent InputLocation where this InputLocation may have been imported from.
     * Can return {@code null}.
     *
     * @return InputLocation
     * @since 4.0.0
     */
    InputLocation getImportedFrom();

     * Gets the parent InputLocation where this InputLocation may have been imported from.
     * Can return {@code null}.
     *
     * @return InputLocation
     * @since 4.0.0
     */
    public InputLocation getImportedFrom() {
        return importedFrom;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }

     * Gets the parent InputLocation where this InputLocation may have been imported from.
     * Can return {@code null}.
     *
     * @return InputLocation
     * @since 4.0.0
     */
    public InputLocation getImportedFrom() {
        return importedFrom;
    }

    /**
     * Merges the {@code source} location into the {@code target} location.
     *
     * @param target the target location