/usr/share/doc/libasync-http-client-java/api/com/ning/http/client/ntlm/ is in libasync-http-client-java-doc 1.6.5-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/libasync-http-client-java/api/com/ning/http/client/ntlm/NTLMEngine.html
/usr/share/doc/libasync-http-client-java/api/com/ning/http/client/ntlm/NTLMEngineException.html
/usr/share/doc/libasync-http-client-java/api/com/ning/http/client/ntlm/class-use/
/usr/share/doc/libasync-http-client-java/api/com/ning/http/client/ntlm/class-use/NTLMEngine.html
/usr/share/doc/libasync-http-client-java/api/com/ning/http/client/ntlm/class-use/NTLMEngineException.html
/usr/share/doc/libasync-http-client-java/api/com/ning/http/client/ntlm/package-frame.html
/usr/share/doc/libasync-http-client-java/api/com/ning/http/client/ntlm/package-summary.html
/usr/share/doc/libasync-http-client-java/api/com/ning/http/client/ntlm/package-tree.html
/usr/share/doc/libasync-http-client-java/api/com/ning/http/client/ntlm/package-use.html