https://access.redhat.com/webassets/avalon/d/red_hat_jboss_enterprise_application_platform/7.3/javadocs/javax/servlet/annotation/WebListener.html
WebListener (Red Hat JBoss Enterprise Application Platform 7.3.0.GA public API)
red hat jboss
https://tomcat.apache.org/tomcat-9.0-doc/servletapi/javax/servlet/annotation/WebListener.html
WebListener (Servlet 4.0 API Documentation - Apache Tomcat 9.0.118)
declaration: package: javax.servlet.annotation, annotation type: WebListener
api documentationapache tomcatservlet