* {{{./extension.html}extension descriptor}} and {{{./core-extensions.html}core extensions}},

 * {{{/guides/mini/guide-maven-classloading.html}classloader hierarchy}} done by <<<ClassRealmManager>>> component
 ({{{./apidocs/org/apache/maven/classrealm/ClassRealmManager.html}javadoc}}),
 with its <<<DefaultClassRealmManager>>> implementation