/** Map of type arguments and type variables */
    protected final Map<TypeVariable<?>, Type> typeVariables;

    /** Map from property name to {@link PropertyDesc} */
    protected final CaseInsensitiveMap<PropertyDesc> propertyDescCache = new CaseInsensitiveMap<>();

    /** Map from field name to {@link FieldDescImpl} */
    protected final ArrayMap<String, FieldDesc> fieldDescCache = new ArrayMap<>();

    /** Array of {@link ConstructorDesc} */

SequencedCollection<String> reversed = CollectionsUtil.reversed(sequenced);

// Specialized collections
LruHashMap<String, Object> lruCache = new LruHashMap<>(100); // LRU cache with max 100 entries
CaseInsensitiveMap<String> configMap = new CaseInsensitiveMap<>();
```

### Resource Management
```java
import org.codelibs.core.io.*;

// Resource loading and management
URL resource = ResourceUtil.getResource("config.properties");