/usr/share/doc/ruby-amqp/examples/tls/ is in ruby-amqp 1.6.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/ruby-amqp/examples/tls/using_tls.rb
/usr/share/doc/ruby-amqp/examples/tls_certificates/client/
/usr/share/doc/ruby-amqp/examples/tls_certificates/client/cert.pem
/usr/share/doc/ruby-amqp/examples/tls_certificates/client/key.pem
/usr/share/doc/ruby-amqp/examples/tls_certificates/client/keycert.p12
/usr/share/doc/ruby-amqp/examples/tls_certificates/client/req.pem
/usr/share/doc/ruby-amqp/examples/tls_certificates/server/
/usr/share/doc/ruby-amqp/examples/tls_certificates/server/cert.pem
/usr/share/doc/ruby-amqp/examples/tls_certificates/server/key.pem
/usr/share/doc/ruby-amqp/examples/tls_certificates/server/keycert.p12
/usr/share/doc/ruby-amqp/examples/tls_certificates/server/req.pem
/usr/share/doc/ruby-amqp/examples/tls_certificates/testca/
/usr/share/doc/ruby-amqp/examples/tls_certificates/testca/cacert.cer
/usr/share/doc/ruby-amqp/examples/tls_certificates/testca/cacert.pem
/usr/share/doc/ruby-amqp/examples/tls_certificates/testca/index.txt
/usr/share/doc/ruby-amqp/examples/tls_certificates/testca/index.txt.attr
/usr/share/doc/ruby-amqp/examples/tls_certificates/testca/index.txt.old
/usr/share/doc/ruby-amqp/examples/tls_certificates/testca/openssl.cnf
/usr/share/doc/ruby-amqp/examples/tls_certificates/testca/private/
/usr/share/doc/ruby-amqp/examples/tls_certificates/testca/private/cakey.pem
/usr/share/doc/ruby-amqp/examples/tls_certificates/testca/serial
/usr/share/doc/ruby-amqp/examples/tls_certificates/testca/serial.old