import org.apache.maven.api.model.Model;

/**
 * Context used to transform a pom file.
 *
 * @since 4.0.0
 */
public interface ModelTransformerContext {

    /**
     * Key to get the TransformerContext from the SessionData
     */
    Object KEY = ModelTransformerContext.class;

    /**
     * Get the value of the Maven user property.
     */
    String getUserProperty(String key);

    /**

import org.apache.maven.api.services.ModelTransformerContext;

/**
 * ModelSourceTransformer for the build pom
 *
 * @since 4.0.0
 */
@Named
@Singleton
public class BuildModelTransformer implements ModelTransformer {

    public static final String NAMESPACE_PREFIX = "http://maven.apache.org/POM/";

    @Override
    public Model transform(ModelTransformerContext context, Model model, Path path) {

import org.apache.maven.api.annotations.Nonnull;
import org.apache.maven.api.model.Model;

/**
 * The ModelTransformer is a way to transform the local pom while streaming the input.
 *
 * The {@link #transform(ModelTransformerContext, Model, Path)} method uses a Path on purpose, to ensure the
 * local pom is the original source.
 *
 * @since 4.0.0
 */
public interface ModelTransformer {
    /**

     */
    @Override
    public ModelTransformerContext initialize(ModelBuilderRequest request, ModelProblemCollector collector) {
        // We must assume the TransformerContext was created using this.newTransformerContextBuilder()
        DefaultModelProblemCollector problems = (DefaultModelProblemCollector) collector;
        return new ModelTransformerContext() {

            @Override

     * @return the mutable transformerContext
     */
    ModelTransformerContext initialize(ModelBuilderRequest request, ModelProblemCollector problems);

    /**
     * The immutable transformerContext, can be used after the buildplan is finished.
     *
     * @return the immutable transformerContext
     */
    ModelTransformerContext build();

import java.util.function.Supplier;

import org.apache.maven.api.model.Model;
import org.apache.maven.api.services.ModelTransformerContext;
import org.apache.maven.api.services.model.*;

/**
 *
 * @since 4.0.0
 */
class DefaultModelTransformerContext implements ModelTransformerContext {
    final ModelProcessor modelLocator;

    final Map<String, String> userProperties = new ConcurrentHashMap<>();

import org.apache.maven.api.services.ModelResolverException;
import org.apache.maven.api.services.ModelSource;
import org.apache.maven.api.services.ModelTransformer;
import org.apache.maven.api.services.ModelTransformerContext;
import org.apache.maven.api.services.ModelTransformerContextBuilder;
import org.apache.maven.api.services.ModelTransformerException;
import org.apache.maven.api.services.Source;

import org.apache.maven.api.services.ModelResolver;
import org.apache.maven.api.services.ModelResolverException;
import org.apache.maven.api.services.ModelSource;
import org.apache.maven.api.services.ModelTransformerContext;
import org.apache.maven.api.services.ModelTransformerContextBuilder;
import org.apache.maven.api.services.Source;
import org.apache.maven.api.services.model.ModelBuildingListener;