MyCustomClass.java

import org.apache.sling.adapter.SlingAdaptable;
import org.apache.sling.api.resource.Resource;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.jcr.Node;

public abstract class MyCustomClass extends SlingAdaptable {
 protected static final Logger log = LoggerFactory.getLogger(MyCustomClass.class);

    /**
     * {@inheritDoc}
     */
     @SuppressWarnings("unchecked")
    public <AdapterType> AdapterType adaptTo(Class<AdapterType> type) {
        if (type == Resource.class) {
            return (AdapterType) resource;
        } else if (type == Node.class) {
            return (AdapterType) resource.adaptTo(Node.class);
        }
        return null;
    }
}