/usr/share/doc/ is in php-cas 1.3.3-2ubuntu1.
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/usr/share/doc/php-cas/
/usr/share/doc/php-cas/examples/
/usr/share/doc/php-cas/examples/example_hardening.php
/usr/share/doc/php-cas/examples/script_info.php
/usr/share/doc/php-cas/examples/example_proxy_GET.php
/usr/share/doc/php-cas/examples/create_pgt_storage_db_table.php
/usr/share/doc/php-cas/examples/example_pgt_storage_db.php
/usr/share/doc/php-cas/examples/example_advanced_saml11.php
/usr/share/doc/php-cas/examples/example_proxy_serviceWeb.php
/usr/share/doc/php-cas/examples/example_proxy_serviceWeb_chaining.php
/usr/share/doc/php-cas/examples/example_service.php
/usr/share/doc/php-cas/examples/example_service_that_proxies.php
/usr/share/doc/php-cas/examples/config.example.php
/usr/share/doc/php-cas/examples/example_lang.php
/usr/share/doc/php-cas/examples/example_proxy_rebroadcast.php
/usr/share/doc/php-cas/examples/example_custom_urls.php
/usr/share/doc/php-cas/examples/example_no_ssl_cn_validation.php
/usr/share/doc/php-cas/examples/example_pgt_storage_file.php
/usr/share/doc/php-cas/examples/example_simple.php
/usr/share/doc/php-cas/examples/example_html.php
/usr/share/doc/php-cas/examples/example_proxy_POST.php
/usr/share/doc/php-cas/examples/example_logout.php
/usr/share/doc/php-cas/examples/example_test.php
/usr/share/doc/php-cas/examples/example_service_POST.php
/usr/share/doc/php-cas/examples/example.css
/usr/share/doc/php-cas/examples/example_gateway.php
/usr/share/doc/php-cas/Upgrading.gz
/usr/share/doc/php-cas/index.html
/usr/share/doc/php-cas/NOTICE
/usr/share/doc/php-cas/copyright
/usr/share/doc/php-cas/changelog.Debian.gz
/usr/share/doc/php-cas/README.md
/usr/share/doc/php-cas/README.Debian