/usr/share/doc/libgnumail-java/api/javax/mail/event/class-use/ is in libgnumail-java-doc 1.1.2-7.
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/usr/share/doc/libgnumail-java/api/javax/mail/event/class-use/ConnectionAdapter.html
/usr/share/doc/libgnumail-java/api/javax/mail/event/class-use/ConnectionEvent.html
/usr/share/doc/libgnumail-java/api/javax/mail/event/class-use/ConnectionListener.html
/usr/share/doc/libgnumail-java/api/javax/mail/event/class-use/FolderAdapter.html
/usr/share/doc/libgnumail-java/api/javax/mail/event/class-use/FolderEvent.html
/usr/share/doc/libgnumail-java/api/javax/mail/event/class-use/FolderListener.html
/usr/share/doc/libgnumail-java/api/javax/mail/event/class-use/MailEvent.html
/usr/share/doc/libgnumail-java/api/javax/mail/event/class-use/MessageChangedEvent.html
/usr/share/doc/libgnumail-java/api/javax/mail/event/class-use/MessageChangedListener.html
/usr/share/doc/libgnumail-java/api/javax/mail/event/class-use/MessageCountAdapter.html
/usr/share/doc/libgnumail-java/api/javax/mail/event/class-use/MessageCountEvent.html
/usr/share/doc/libgnumail-java/api/javax/mail/event/class-use/MessageCountListener.html
/usr/share/doc/libgnumail-java/api/javax/mail/event/class-use/StoreEvent.html
/usr/share/doc/libgnumail-java/api/javax/mail/event/class-use/StoreListener.html
/usr/share/doc/libgnumail-java/api/javax/mail/event/class-use/TransportAdapter.html
/usr/share/doc/libgnumail-java/api/javax/mail/event/class-use/TransportEvent.html
/usr/share/doc/libgnumail-java/api/javax/mail/event/class-use/TransportListener.html