https://github.com/spring-projects/spring-framework: Spring Core (Spring IO)
  • Juergen Hoeller 
Useful generic java.util.concurrent.Future extensions. 
/**
 * Useful generic {@code java.util.concurrent.Future} extensions.
 */
@NonNullApi
@NonNullFields
package org.springframework.util.concurrent;

import org.springframework.lang.NonNullApi;
import org.springframework.lang.NonNullFields;