import org.apache.maven.impl.model.DefaultInterpolator;
import org.apache.maven.internal.xml.XmlPlexusConfiguration;
import org.apache.maven.model.v4.MavenTransformer;
import org.codehaus.plexus.configuration.PlexusConfiguration;

@Deprecated
public class ExtensionConfigurationModule implements Module {

    private final CoreExtensionEntry extension;
    private final UnaryOperator<String> callback;

import org.codehaus.plexus.component.configurator.converters.lookup.DefaultConverterLookup;
import org.codehaus.plexus.component.configurator.expression.ExpressionEvaluator;
import org.codehaus.plexus.configuration.PlexusConfiguration;
import org.codehaus.plexus.configuration.xml.XmlPlexusConfiguration;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

            throws ComponentConfigurationException {

        TypeLiteral<?> fieldType = TypeLiteral.get(field.getGenericType());
        return convertProperty(beanType, valueType, configuration, fieldType);
    }

    private Object convertProperty(
            Class<?> beanType, Class<?> valueType, PlexusConfiguration configuration, TypeLiteral<?> paramType)

import org.codehaus.plexus.component.configurator.expression.ExpressionEvaluationException;
import org.codehaus.plexus.component.configurator.expression.ExpressionEvaluator;
import org.codehaus.plexus.configuration.PlexusConfiguration;

import static java.util.Objects.requireNonNull;

/**
 * Common implementations for plugin parameters configuration validation.
 *
 */

import org.codehaus.plexus.component.configurator.converters.special.ClassRealmConverter;
import org.codehaus.plexus.component.configurator.expression.ExpressionEvaluator;
import org.codehaus.plexus.configuration.PlexusConfiguration;

/**
 * A component configurator which can leverage the {@link EnhancedConfigurationConverter}
 * and {@link EnhancedConverterLookup}.
 */
@Singleton
@Named("enhanced")

import org.apache.maven.execution.MavenSession;
import org.apache.maven.plugin.descriptor.MojoDescriptor;
import org.codehaus.plexus.component.configurator.expression.ExpressionEvaluator;
import org.codehaus.plexus.configuration.PlexusConfiguration;

/**
 * Service responsible for validating plugin configuration.
 *
 */
public interface MavenPluginConfigurationValidator {
    /**
     * Checks mojo configuration issues.
     */

import org.apache.maven.impl.model.DefaultInterpolator;
import org.apache.maven.internal.xml.XmlPlexusConfiguration;
import org.apache.maven.model.v4.MavenTransformer;
import org.codehaus.plexus.configuration.PlexusConfiguration;

public class ExtensionConfigurationModule implements Module {

    private final CoreExtensionEntry extension;
    private final UnaryOperator<String> callback;

import org.apache.maven.plugin.descriptor.MojoDescriptor;
import org.apache.maven.plugin.descriptor.Parameter;
import org.codehaus.plexus.component.configurator.expression.ExpressionEvaluator;
import org.codehaus.plexus.configuration.PlexusConfiguration;

/**
 * Print warnings if deprecated core parameters are used in mojo.
 *
 * @since 3.9.1
 */
@Singleton
@Named
class DeprecatedCoreExpressionValidator extends AbstractMavenPluginParametersValidator {

        XmlNode configuration = plugin.getDelegate().getConfiguration();

        assertEquals(
                "src/conf/plexus.conf",
                configuration.child("plexusConfiguration").value());

        assertEquals(
                "src/conf/plexus.properties",
                configuration.child("plexusConfigurationPropertiesFile").value());

run. In the MojoDescriptor we are interested in the <configuration/> element and <parameters/> element. From these elements we need to make a component configuration for the MojoExecution. The actual DOM like structure we create is of type PlexusConfiguration and is the type we use with the ComponentConfigurator to initialize fields in a Plexus component. Typically this is done within Plexus with the configuration supplied with component configuration, but in Maven we take configuration values from...