http://findbugs.sourceforge.net/: JSR305 Annotations for Findbugs 
package javax.annotation;

import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;


Used to annotate a constructor/factory parameter to indicate that returned
object (X) will close the resource when X is closed.

See Also:
/**
 * Used to annotate a constructor/factory parameter to indicate that returned
 * object (X) will close the resource when X is closed.
 *
 * @see WillClose
 * @see WillNotClose
 */
@Documented
@Retention(RetentionPolicy.RUNTIME)
public @interface WillCloseWhenClosed {

}