* putAll()}.
   *
   * @return a map view from each row key to a secondary map from column keys to values
   */
  Map<R, Map<C, V>> rowMap();

  /**
   * Returns a view that associates each column key with the corresponding map from row keys to
   * values. Changes to the returned map will update this table. The returned map does not support

			},
			expected:        map[string]string{},
			filterRetention: true,
		},
		{
			metadata: map[string]string{
				"x-amz-object-lock-legal-hold": "off",
			},
			expected:        map[string]string{},
			filterLegalHold: true,
		},
		{
			metadata: map[string]string{
				"x-amz-object-lock-legal-hold": "on",
			},
			expected:        map[string]string{"x-amz-object-lock-legal-hold": "on"},

import static org.codelibs.core.collection.Maps.map;
import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertThat;

import java.util.Map;

import org.junit.Test;

/**
 * @author koichik
 */
public class MapsTest {

    /**
     * @throws Exception
     */
    @Test
    public void test() throws Exception {
        final Map<String, Integer> map = map("a", 1).$("b", 2).$("c", 3).$();

    ImmutableBiMap<String, Integer> map = new Builder<String, Integer>().build();
    assertEquals(Collections.<String, Integer>emptyMap(), map);
    assertEquals(Collections.<Integer, String>emptyMap(), map.inverse());
    assertThat(map).isSameInstanceAs(ImmutableBiMap.of());
  }

  public void testSingletonBuilder() {
    ImmutableBiMap<String, Integer> map = new Builder<String, Integer>().put("one", 1).build();

        // Create nested map structure
        Map<String, Object> nestedMap = new HashMap<>();
        nestedMap.put("nested_key", "nested_value");

        Map<String, Object> sourceMap = new HashMap<>();
        sourceMap.put("string", "test");
        sourceMap.put("integer", 42);
        sourceMap.put("long", 100L);
        sourceMap.put("double", 3.14);
        sourceMap.put("boolean", false);

    @Override
    protected void mergeModel(Model target, Model source, boolean sourceDominant, Map<Object, Object> context) {
        context.put(ARTIFACT_ID, target.getArtifactId());

        super.mergeModel(target, source, sourceDominant, context);
    }

    @Override
    protected void mergeModel_Name(Model target, Model source, boolean sourceDominant, Map<Object, Object> context) {
        String src = source.getName();
        if (src != null) {

        #; !GreaterThan = map:{ $$ALL$$ = list:{ $$CommonColumn$$ } }
        #; !LessThan = map:{ $$ALL$$ = list:{ $$CommonColumn$$ } }
        #; !GreaterEqual = map:{ $$ALL$$ = list:{ $$CommonColumn$$ } }
        #; !LessEqual = map:{ $$ALL$$ = list:{ $$CommonColumn$$ } }
        #; !InScope = map:{ $$ALL$$ = list:{ $$CommonColumn$$ } }
        #; !NotInScope = map:{ $$ALL$$ = list:{ $$CommonColumn$$ } }

     * Determines if the given document data matches the configured match expression.
     *
     * @param map the document data as a map of field names to values
     * @return true if the document matches the expression, false otherwise
     */
    public boolean match(final Map<String, Object> map) {

        if (map == null || map.isEmpty() || matchExpression == null) {
            return false;
        }

    final Map<K, V> map;

    MapMultimap(Map<K, V> map) {
      this.map = checkNotNull(map);
    }

    @Override
    public int size() {
      return map.size();
    }

    @Override
    public boolean containsKey(@Nullable Object key) {
      return map.containsKey(key);
    }

    @Override

   *     / value map
   * @param factory supplier of new, empty maps that will each hold all column key / value mappings
   *     for a given row key
   * @throws IllegalArgumentException if {@code backingMap} is not empty
   * @since 10.0
   */
  public static <R, C, V> Table<R, C, V> newCustomTable(
      Map<R, Map<C, V>> backingMap, Supplier<? extends Map<C, V>> factory) {