.filter(StringUtil::isNotBlank)
                            .distinct()
                            .collect(Collectors.joining("\n")));
                    form.virtualHosts = stream(entity.getVirtualHosts())
                            .get(stream -> stream.filter(StringUtil::isNotBlank).map(String::trim).collect(Collectors.joining("\n")));

    private static final String EXPRESSION_DOCO_ROOTPATH = "META-INF/maven/plugin-expressions/";

    private static Map<String, Expression> expressionDocumentation;

    public static Map<String, Expression> load() throws ExpressionDocumentationException {
        if (expressionDocumentation == null) {
            expressionDocumentation = new HashMap<>();

    }

    /**
     * Creates a map item with label and value for use in dropdown lists and form options.
     *
     * @param label the display label for the item
     * @param value the value associated with the item
     * @return a map containing the label and value
     */
    protected Map<String, String> createItem(final String label, final String value) {
        final Map<String, String> map = new HashMap<>(2);

                        try {
                            is = lhaFile.getInputStream(head);
                            final Map<String, String> map = new HashMap<>();
                            map.put(ExtractData.RESOURCE_NAME_KEY, filename);
                            buf.append(extractor.getText(new IgnoreCloseInputStream(is), map).getContent());
                            buf.append('\n');
                        } catch (final Exception e) {

    }

    /**
     * Returns a map of user-defined properties for the Maven execution.
     * These properties can be set using the -D command-line option.
     *
     * @return an unmodifiable map of user properties
     */
    @Nonnull
    Map<String, String> userProperties();

    /**
     * Returns a map of system properties for the Maven execution.

    }

    @Override
    public Map<String, List<String>> getRequestProperties() {
        final Map<String, List<String>> map = new HashMap<>();
        for (final Entry<String, List<String>> entry : this.requestProperties.entrySet()) {
            map.put(entry.getKey(), Collections.unmodifiableList(entry.getValue()));
        }
        return Collections.unmodifiableMap(map);
    }

    @Override

     */
    protected boolean includeAware;

    /**
     * A map of attributes.
     */
    protected final Map<String, Object> attributeMap = new HashMap<>();

    /**
     * A map of features.
     */
    protected final Map<String, String> featureMap = new HashMap<>();

    /**
     * A map of field rules.
     */
    protected Map<String, String> fieldRuleMap = new LinkedHashMap<>();

    public Integer crudMode;

    /**
     * The name of the role.
     */
    @Required
    @Size(max = 100)
    public String name;

    /**
     * The attributes map for the role.
     */
    public Map<String, String> attributes = new HashMap<>();

    /**
     * Initializes the form with default values for creating a new role.
     */
    public void initialize() {

import com.google.common.collect.testing.features.MapFeature;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import org.junit.Ignore;

/**
 * A generic JUnit test which tests {@code toString()} operations on a map. Can't be invoked
 * directly; please see {@link com.google.common.collect.testing.MapTestSuiteBuilder}.
 *
 * @author Kevin Bourrillion

import com.google.common.collect.testing.features.MapFeature;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import org.junit.Ignore;

/**
 * A generic JUnit test which tests {@code toString()} operations on a map. Can't be invoked
 * directly; please see {@link com.google.common.collect.testing.MapTestSuiteBuilder}.
 *
 * @author Kevin Bourrillion