/usr/share/lintian/overrides/browser-plugin-lightspark is in browser-plugin-lightspark 0.5.5-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | # The link gets installed with alternatives.
package-contains-empty-directory usr/lib/mozilla/plugins/
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