/usr/share/ant/etc/ is in ant-optional 1.10.3-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/ant/etc/ant-update.xsl
/usr/share/ant/etc/changelog.xsl
/usr/share/ant/etc/checkstyle/
/usr/share/ant/etc/checkstyle/checkstyle-frames-sortby-check.xsl
/usr/share/ant/etc/checkstyle/checkstyle-frames.xsl
/usr/share/ant/etc/checkstyle/checkstyle-text.xsl
/usr/share/ant/etc/checkstyle/checkstyle-xdoc.xsl
/usr/share/ant/etc/coverage-frames.xsl
/usr/share/ant/etc/jdepend-frames.xsl
/usr/share/ant/etc/jdepend.xsl
/usr/share/ant/etc/junit-frames-xalan1.xsl
/usr/share/ant/etc/junit-frames.xsl
/usr/share/ant/etc/junit-noframes.xsl
/usr/share/ant/etc/log.xsl
/usr/share/ant/etc/maudit-frames.xsl
/usr/share/ant/etc/mmetrics-frames.xsl
/usr/share/ant/etc/tagdiff.xsl