public Plugin getPluginDefinitionForPrefix(String prefix, MavenSession session, MavenProject project) {
        PluginPrefixRequest request = new DefaultPluginPrefixRequest(prefix, session);
        request.setPom(project.getModel());

        try {
            PluginPrefixResult result = pluginPrefixResolver.resolve(request);

            Plugin plugin = new Plugin();
            plugin.setGroupId(result.getGroupId());

    public Map<String, String> getEffectiveProperties(@Nullable Project project) {
        HashMap<String, String> result = new HashMap<>(getSystemProperties());
        if (project != null) {
            result.putAll(project.getModel().getProperties());
        }
        result.putAll(getUserProperties());
        return result;
    }

    @Nonnull
    @Override
    public Version getMavenVersion() {

     *
     * @return the toolchain type
     */
    String getType();

    /**
     * Gets the underlying toolchain model.
     *
     * @return the toolchain model
     */
    ToolchainModel getModel();

    /**
     * Gets the platform tool executable.
     *
     * @param toolName the tool platform independent tool name
     * @return file representing the tool executable, or null if the tool cannot be found

        for (MavenProject mavenProject : projects) {
            if (!"maven-plugin".equals(mavenProject.getPackaging())) {
                Prerequisites prerequisites =
                        mavenProject.getModel().getDelegate().getPrerequisites();
                if (prerequisites != null && prerequisites.getMaven() != null) {
                    logger.warn(
                            "The project {} uses prerequisites"

            deferDeleteFile(consumer);

            project.addAttachedArtifact(createConsumerPomArtifact(project, consumer, session));
        } else if (project.getModel().getDelegate().isRoot()) {
            throw new IllegalStateException(
                    "The use of the root attribute on the model requires the buildconsumer feature to be active");
        }
    }

        }

        final ExtractData data = new ExtractData();
        final HttpPost httpPost = new HttpPost(url);
        final HttpEntity postEntity = MultipartEntityBuilder.create()
                .setMode(HttpMultipartMode.BROWSER_COMPATIBLE)
                .setCharset(Charset.forName("UTF-8"))
                .addBinaryBody("filedata", in)
                .build();
        httpPost.setEntity(postEntity);

                .lookup(org.apache.maven.project.ProjectBuilder.class)
                .build(pomFile, configuration);

        assertEquals(
                pomFile.getAbsoluteFile(),
                result.getProject().getModel().getPomFile().getAbsoluteFile());
        int errors = 0;
        for (ModelProblem p : result.getProblems()) {
            if (p.getSeverity() == ModelProblem.Severity.ERROR) {
                errors++;
            }

        String key = "m2.name";
        String checkValue = "value";

        MavenProject project = createDefaultProject();
        project.getModel().getProperties().setProperty(key, checkValue);

        ExpressionEvaluator ee = createExpressionEvaluator(project, new Properties());

        Object value = ee.evaluate("${" + key + "}");

    }

    @Override
    public Model build(RepositorySystemSession session, MavenProject project, ModelSource src)
            throws ModelBuilderException {
        Model model = project.getModel().getDelegate();
        boolean flattenEnabled = Features.consumerPomFlatten(session.getConfigProperties());
        String packaging = model.getPackaging();

		}
	}
}

func testCreate(t *testing.T, w *Writer, wt *WriteTest) {
	header := &FileHeader{
		Name:   wt.Name,
		Method: wt.Method,
	}
	if wt.Mode != 0 {
		header.SetMode(wt.Mode)
	}
	f, err := w.CreateHeader(header)
	if err != nil {
		t.Fatal(err)
	}
	_, err = f.Write(wt.Data)
	if err != nil {
		t.Fatal(err)
	}
}