/usr/share/doc/libservlet3.1-java/api/package-search-index.js is in libservlet3.1-java-doc 8.5.30-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 | packageSearchIndex = [{"l":"javax.el"},{"l":"javax.servlet"},{"l":"javax.servlet.annotation"},{"l":"javax.servlet.descriptor"},{"l":"javax.servlet.http"},{"l":"javax.servlet.jsp"},{"l":"javax.servlet.jsp.el"},{"l":"javax.servlet.jsp.tagext"},{"l":"javax.websocket"},{"l":"javax.websocket.server"}]
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