File list of package libxcomposite1-dbg in buster of architecture amd64

/usr/lib/debug/usr/lib/x86_64-linux-gnu/libXcomposite.so.1.0.0
/usr/share/doc/libxcomposite1-dbg/changelog.Debian.gz
/usr/share/doc/libxcomposite1-dbg/changelog.gz
/usr/share/doc/libxcomposite1-dbg/copyright