BeanUtil.copyBeanToBean(source, destination);
BeanUtil.copyBeanToBean(source, destination, options -> 
    options.exclude("password", "internalId"));

// Convert between beans and maps
Map<String, Object> map = BeanUtil.copyBeanToNewMap(bean);
MyBean newBean = BeanUtil.copyMapToNewBean(map, MyBean.class);
```

### Type Conversion
```java
import org.codelibs.core.convert.*;

// Safe type conversions with null handling

    private final ImmutableMap<TypeVariableKey, Type> map;

    TypeTable() {
      this.map = ImmutableMap.of();
    }

    private TypeTable(ImmutableMap<TypeVariableKey, Type> map) {
      this.map = map;
    }

    /** Returns a new {@code TypeResolver} with {@code variable} mapping to {@code type}. */
    final TypeTable where(Map<TypeVariableKey, ? extends Type> mappings) {

            }
        }

        return responseData.getLastModified();
    }

    /**
     * Check if the data map has a title.
     * @param dataMap The data map.
     * @return true if the data map has a title.
     */
    protected boolean hasTitle(final Map<String, Object> dataMap) {
        final Object titleObj = dataMap.get(fessConfig.getIndexFieldTitle());
        if (titleObj != null) {

    LocalCache<?, ?> map = CacheTesting.toLocalCache(cache);

    assertThat(map.segments).hasLength(4);
    assertEquals(2, map.segments[0].table.length());
    assertEquals(2, map.segments[1].table.length());
    assertEquals(2, map.segments[2].table.length());
    assertEquals(2, map.segments[3].table.length());
  }

  @GwtIncompatible // CacheTesting

    LocalCache<?, ?> map = CacheTesting.toLocalCache(cache);

    assertThat(map.segments).hasLength(4);
    assertEquals(2, map.segments[0].table.length());
    assertEquals(2, map.segments[1].table.length());
    assertEquals(2, map.segments[2].table.length());
    assertEquals(2, map.segments[3].table.length());
  }

  @GwtIncompatible // CacheTesting

        // Utility class - no instantiation
    }

    /**
     * Gets a typed value from a document map with a default value.
     *
     * @param <T> the type to convert the value to
     * @param doc the document map to extract the value from
     * @param key the key to look up in the document map
     * @param clazz the class type to convert the value to

        // Default constructor
    }

    private static final Logger logger = LogManager.getLogger(QueryProcessor.class);

    /**
     * Map of query commands indexed by query class simple names.
     * Used to lookup appropriate command handlers for different query types.
     */
    protected Map<String, QueryCommand> queryCommandMap = new HashMap<>();

    /**
     * List of filters that will be applied during query processing.

		switch values := db.Statement.Dest.(type) {
		case map[string]interface{}:
			values[pkFieldName] = insertID
		case *map[string]interface{}:
			(*values)[pkFieldName] = insertID
		case []map[string]interface{}, *[]map[string]interface{}:
			mapValues, ok := values.([]map[string]interface{})
			if !ok {
				if v, ok := values.(*[]map[string]interface{}); ok {
					if *v != nil {
						mapValues = *v
					}

 * <li>{@link #getFromArrayIndex(String, String, String)}: Retrieves an array of maps from the index based on the key.</li>
 * <li>{@link #addToArrayIndex(String, String, String, Map)}: Adds a map to the array index.</li>
 * <li>{@link #deleteKeyFromArray(String, String, String)}: Deletes all entries associated with the specified key from the array index.</li>

)

var encryptRequestTests = []struct {
	header   map[string]string
	metadata map[string]string
}{
	{
		header: map[string]string{
			xhttp.AmzServerSideEncryptionCustomerAlgorithm: "AES256",
			xhttp.AmzServerSideEncryptionCustomerKey:       "XAm0dRrJsEsyPb1UuFNezv1bl9hxuYsgUVC/MUctE2k=",
			xhttp.AmzServerSideEncryptionCustomerKeyMD5:    "bY4wkxQejw9mUJfo72k53A==",
		},
		metadata: map[string]string{},
	},
	{