import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.nio.charset.StandardCharsets;
import java.security.MessageDigest;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import org.apache.maven.api.DependencyScope;
import org.apache.maven.artifact.factory.ArtifactFactory;

        assertEquals("src/main/mdo/nexus.xml", (pom.getValue("build/plugins[1]/executions[1]/configuration[1]/model")));
        assertEquals(
                "src/main/mdo/security.xml", (pom.getValue("build/plugins[1]/executions[2]/configuration[1]/model")));
    }

    /*
        public void testPluginConfigDuplicate()
        throws Exception
    {

                addViolation(problems, BuilderProblem.Severity.WARNING, "localRepository", null, msgS);
            }
            if (!settings.isInteractiveMode()) {
                addViolation(problems, BuilderProblem.Severity.WARNING, "interactiveMode", null, msgS);
            }
            if (settings.isOffline()) {
                addViolation(problems, BuilderProblem.Severity.WARNING, "offline", null, msgS);
            }

    public DefaultModelProblem(
            String message,
            Severity severity,
            Version version,
            String source,
            int lineNumber,
            int columnNumber,
            String modelId,
            Exception exception) {
        this.message = message;
        this.severity = (severity != null) ? severity : Severity.ERROR;
        this.source = (source != null) ? source : "";

            }

            validateStringNoExpression("groupId", problems, Severity.WARNING, Version.V20, m.getGroupId(), m);
            if (parent == null) {
                validateStringNotEmpty("groupId", problems, Severity.FATAL, Version.V20, m.getGroupId(), m);
            }

            validateStringNoExpression("artifactId", problems, Severity.WARNING, Version.V20, m.getArtifactId(), m);

    boolean hasFatalErrors();

    default void add(BuilderProblem.Severity severity, ModelProblem.Version version, String message) {
        add(severity, version, message, null, null);
    }

    default void add(
            BuilderProblem.Severity severity, ModelProblem.Version version, String message, InputLocation location) {
        add(severity, version, message, location, null);
    }

    default void add(

    final int lineNumber;
    final int columnNumber;
    final Exception exception;
    final String message;
    final Severity severity;

    DefaultBuilderProblem(
            String source, int lineNumber, int columnNumber, Exception exception, String message, Severity severity) {
        this.source = source;
        this.lineNumber = lineNumber;
        this.columnNumber = columnNumber;

    }

    private boolean hasErrors(List<BuilderProblem> problems) {
        if (problems != null) {
            for (BuilderProblem problem : problems) {
                if (BuilderProblem.Severity.ERROR.compareTo(problem.getSeverity()) >= 0) {
                    return true;
                }
            }
        }

        return false;
    }

    private PersistedToolchains readToolchains(

                    // still unreadable even in non-strict mode, rethrow original error
                    throw e;
                }

                Severity severity = request.isProjectBuild() ? Severity.ERROR : Severity.WARNING;
                problems.add(
                        severity,
                        ModelProblem.Version.V20,
                        "Malformed POM " + modelSource.getLocation() + ": " + e.getMessage(),

    }

    @Override
    public void add(BuilderProblem.Severity severity, ModelProblem.Version version, String message) {
        add(severity, version, message, null, null);
    }

    @Override
    public void add(
            BuilderProblem.Severity severity, ModelProblem.Version version, String message, InputLocation location) {
        add(severity, version, message, location, null);
    }

    @Override