https://github.com/spring-projects/spring-framework: Spring Web (Spring IO)
  • Juergen Hoeller 
Provides generic filter base classes allowing for bean-style configuration.

/**
 * Provides generic filter base classes allowing for bean-style configuration.
 */
@NonNullApi
@NonNullFields
package org.springframework.web.filter;

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