/usr/share/lintian/overrides/libswt-gtk-4-java is in libswt-gtk-4-java 4.5.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | # swt-gtk-4.jar is architecture-dependent:
libswt-gtk-4-java: jar-not-in-usr-share usr/lib/java/swt-gtk-*.jar
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