https://tomcat.apache.org/tomcat-9.0-doc/api/org/apache/catalina/valves/AbstractAccessLogValve.HeaderElement.html
AbstractAccessLogValve.HeaderElement (Apache Tomcat 9.0.118 API Documentation)
declaration: package: org.apache.catalina.valves, class: AbstractAccessLogValve, class: HeaderElement
apache tomcatapidocumentation