/usr/share/doc/libmail-java/api/package-search-index.js is in libmail-java-doc 1.6.1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 | packageSearchIndex = [{"l":"com.sun.mail.auth"},{"l":"com.sun.mail.dsn"},{"l":"com.sun.mail.gimap"},{"l":"com.sun.mail.gimap.protocol"},{"l":"com.sun.mail.handlers"},{"l":"com.sun.mail.iap"},{"l":"com.sun.mail.imap"},{"l":"com.sun.mail.imap.protocol"},{"l":"com.sun.mail.pop3"},{"l":"com.sun.mail.smtp"},{"l":"com.sun.mail.util"},{"l":"com.sun.mail.util.logging"},{"l":"javax.mail"},{"l":"javax.mail.event"},{"l":"javax.mail.internet"},{"l":"javax.mail.search"},{"l":"javax.mail.util"}]
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