https://github.com/spring-projects/spring-framework: Spring Web (Spring IO)
  • Juergen Hoeller 
Annotations for binding requests to controllers and handler methods
as well as for binding request parameters to method arguments.

/**
 * Annotations for binding requests to controllers and handler methods
 * as well as for binding request parameters to method arguments.
 */
@NonNullApi
@NonNullFields
package org.springframework.web.bind.annotation;

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