import org.apache.maven.internal.impl.model.DefaultModelTransformerContext.Holder;

/**
 * Builds up the transformer context.
 * After the buildplan is ready, the build()-method returns the immutable context useful during distribution.
 * This is an inner class, as it must be able to call readRawModel()
 *
 * @since 4.0.0
 */

            if (inputStream != null) {
                return xml.read(inputStream, request.isStrict(), source);
            } else if (reader != null) {
                return xml.read(reader, request.isStrict(), source);
            } else if (path != null) {
                try (InputStream is = Files.newInputStream(path)) {
                    return xml.read(is, request.isStrict(), source);
                }
            } else {

            if (reader != null) {
                return xml.read(reader, request.isStrict());
            } else {
                return xml.read(inputStream, request.isStrict());
            }
        } catch (Exception e) {
            throw new XmlReaderException("Unable to read toolchains: " + getMessage(e), getLocation(e), e);
        }
    }

    @Override

                    return PersistedToolchains.newInstance();
                }
                toolchains = request.getSession()
                        .getService(ToolchainsXmlFactory.class)
                        .read(XmlReaderRequest.builder()
                                .inputStream(is)
                                .location(toolchainsSource.getLocation())
                                .strict(true)

        // phase 1
        DefaultModelBuilderResult result = new DefaultModelBuilderResult();

        DefaultModelProblemCollector problems = new DefaultModelProblemCollector(result);

        // read and validate raw model
        Model fileModel = readFileModel(request, problems);
        result.setFileModel(fileModel);

        Model activatedFileModel = activateFileModel(fileModel, request, result, problems);

     * The input stream may be for a file or for an entry in a JAR file.
     */
    @Nonnull
    private static String getModuleName(InputStream in) throws IOException {
        return ModuleDescriptor.read(in).name();
    }

    /**
     * Returns the type of path detected. The return value is {@link JavaPathType#MODULES}
     * if the dependency is a modular JAR file or a directory containing module descriptor(s),

            attachedArtifacts.set(index, artifact);
        } else {
            attachedArtifacts.add(artifact);
        }
    }

    /**
     * Returns a read-only list of the attached artifacts to this project.
     *
     * @return the attached artifacts of this project
     */
    public List<Artifact> getAttachedArtifacts() {
        if (attachedArtifacts == null) {

            <![CDATA[
            The source control management system URL
            that describes the repository and how to connect to the
            repository.
            This connection is read-only.
            <br><b>Default value is</b>: parent value [+ path adjustment] + (artifactId or project.directory property), or just parent value if
            scm's {@code child.scm.connection.inherit.append.path="false"}

            if (reader != null) {
                return xml.read(reader, request.isStrict(), source);
            } else {
                return xml.read(inputStream, request.isStrict(), source);
            }
        } catch (Exception e) {
            throw new XmlReaderException("Unable to read settings: " + getMessage(e), getLocation(e), e);
        }
    }

    @Override

        try {
            try (InputStream is = settingsSource.openStream()) {
                settings = request.getSession()
                        .getService(SettingsXmlFactory.class)
                        .read(XmlReaderRequest.builder()
                                .inputStream(is)
                                .location(settingsSource.getLocation())
                                .strict(true)