https://github.com/spring-projects/spring-framework: Spring Context (Spring IO)
  • Juergen Hoeller 
Provides supporting infrastructure to allow Spring-created MBeans
to send JMX notifications.

/**
 * Provides supporting infrastructure to allow Spring-created MBeans
 * to send JMX notifications.
 */
@NonNullApi
@NonNullFields
package org.springframework.jmx.export.notification;

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