https://github.com/spring-projects/spring-framework: Spring AOP (Spring IO)
  • Juergen Hoeller 
Base classes enabling auto-proxying based on AspectJ.
Support for AspectJ annotation aspects resides in the "aspectj.annotation" package.

/**
 * Base classes enabling auto-proxying based on AspectJ.
 * Support for AspectJ annotation aspects resides in the "aspectj.annotation" package.
 */
@NonNullApi
@NonNullFields
package org.springframework.aop.aspectj.autoproxy;

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