/usr/share/doc/ is in mustang-testdata 3.2.3-1ubuntu1.
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/usr/share/doc/mustang-testdata/
/usr/share/doc/mustang-testdata/changelog.Debian.gz
/usr/share/doc/mustang-testdata/copyright
/usr/share/doc/mustang-testdata/examples/
/usr/share/doc/mustang-testdata/examples/pdbs/
/usr/share/doc/mustang-testdata/examples/pdbs/1ard.pdb
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/usr/share/doc/mustang-testdata/examples/pdbs/1zaa1.pdb
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/usr/share/doc/mustang-testdata/examples/pdbs/1zaa3.pdb
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/usr/share/doc/mustang-testdata/examples/pdbs/2drp1.pdb
/usr/share/doc/mustang-testdata/examples/pdbs/2drp2.pdb
/usr/share/doc/mustang-testdata/examples/pdbs/3znf.pdb
/usr/share/doc/mustang-testdata/examples/pdbs/5znf.pdb
/usr/share/doc/mustang-testdata/examples/test_zf-CCHH