- those that are used locally by the user like <developerConnection/>

* User configuration

 User configuration which is utilized site wide are controlled with the ${user.home}/.m2/maven.properties.

 User configuration which is utilized at the project level are controlled with the
 ${project.home}/maven.properties file.

Plugin configuration

 The configuration of plugins is of the same form as the maven {{{plugin-descriptors}plugin descriptors}}

     * Fully equivalent to {@code setConfiguration(configuration, null)}.
     *
     * @param configuration The configuration to unmarshal, may be {@code null}.
     * @return This request for chaining, never {@code null}.
     */
    BeanConfigurationRequest setConfiguration(Object configuration);

    /**
     * Sets the configuration to unmarshal into the bean. The configuration should be taken from

    }

    /**
     * The key that can must used to identify the configuration using the
     * {@link javax.inject.Named} annotation.
     */
    public String getKey() {
        return key;
    }

    /**
     * Returns the configuration for this extension.
     */
    public XmlNode getConfiguration() {
        return configuration;
    }

import org.codehaus.plexus.component.repository.exception.ComponentLookupException;
import org.codehaus.plexus.configuration.DefaultPlexusConfiguration;
import org.codehaus.plexus.configuration.PlexusConfiguration;
import org.codehaus.plexus.configuration.PlexusConfigurationException;
import org.codehaus.plexus.personality.plexus.lifecycle.phase.Contextualizable;
import org.eclipse.aether.RepositorySystemSession;

        assertEquals("one", pom.getValue("build/plugins[1]/configuration/stringParams/stringParam[1]"));
        assertEquals("two", pom.getValue("build/plugins[1]/configuration/stringParams/stringParam[2]"));
        assertEquals("three", pom.getValue("build/plugins[1]/configuration/stringParams/stringParam[3]"));
        assertEquals("four", pom.getValue("build/plugins[1]/configuration/stringParams/stringParam[4]"));
    }

    /* MNG-3827*/

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.configuration;

import javax.xml.stream.XMLStreamException;

import java.io.File;
import java.io.StringReader;
import java.nio.file.Path;
import java.nio.file.Paths;

import org.apache.maven.configuration.internal.DefaultBeanConfigurator;
import org.apache.maven.internal.xml.XmlNodeStaxBuilder;

        ProjectBuildingRequest configuration = new DefaultProjectBuildingRequest();
        configuration.setLocalRepository(getLocalRepository());
        configuration.setRemoteRepositories(Arrays.asList(new ArtifactRepository[] {}));
        configuration.setProcessPlugins(false);
        configuration.setResolveDependencies(true);
        initRepoSession(configuration);

        try {

 * @since 3.0
 */
public interface BeanConfigurator {

    /**
     * Performs the specified bean configuration.
     *
     * @param request The configuration request that specifies the bean and the configuration to process, must not be
     *            {@code null}.
     * @throws BeanConfigurationException If the bean configuration could not be successfully processed.
     */

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.configuration;

/**
 * Preprocesses a value from a bean configuration before the bean configurator unmarshals it into a bean property. A
 * common use case for such preprocessing is the evaluation of variables within the configuration value.
 *
 */
public interface BeanConfigurationValuePreprocessor {

    /**

          <version>2.1</version>
          <configuration>
            <source>1.5</source>
            <target xml:space="preserve">  1.5  </target>
          </configuration>
        </plugin>
        <plugin>
          <artifactId>maven-ear-plugin</artifactId>
          <version>3.3.0</version>
          <configuration>
            <modules>
              <module>
                <test>test</test>