/usr/share/doc/libjsap-java/api/com/martiansoftware/jsap/ant/ is in libjsap-java-doc 2.1-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/libjsap-java/api/com/martiansoftware/jsap/ant/DefaultValue.html
/usr/share/doc/libjsap-java/api/com/martiansoftware/jsap/ant/FlaggedOptionConfiguration.html
/usr/share/doc/libjsap-java/api/com/martiansoftware/jsap/ant/JSAPAntTask.html
/usr/share/doc/libjsap-java/api/com/martiansoftware/jsap/ant/OptionConfiguration.html
/usr/share/doc/libjsap-java/api/com/martiansoftware/jsap/ant/ParameterConfiguration.html
/usr/share/doc/libjsap-java/api/com/martiansoftware/jsap/ant/ParserProperty.html
/usr/share/doc/libjsap-java/api/com/martiansoftware/jsap/ant/SwitchConfiguration.html
/usr/share/doc/libjsap-java/api/com/martiansoftware/jsap/ant/UnflaggedOptionConfiguration.html
/usr/share/doc/libjsap-java/api/com/martiansoftware/jsap/ant/class-use/
/usr/share/doc/libjsap-java/api/com/martiansoftware/jsap/ant/class-use/DefaultValue.html
/usr/share/doc/libjsap-java/api/com/martiansoftware/jsap/ant/class-use/FlaggedOptionConfiguration.html
/usr/share/doc/libjsap-java/api/com/martiansoftware/jsap/ant/class-use/JSAPAntTask.html
/usr/share/doc/libjsap-java/api/com/martiansoftware/jsap/ant/class-use/OptionConfiguration.html
/usr/share/doc/libjsap-java/api/com/martiansoftware/jsap/ant/class-use/ParameterConfiguration.html
/usr/share/doc/libjsap-java/api/com/martiansoftware/jsap/ant/class-use/ParserProperty.html
/usr/share/doc/libjsap-java/api/com/martiansoftware/jsap/ant/class-use/SwitchConfiguration.html
/usr/share/doc/libjsap-java/api/com/martiansoftware/jsap/ant/class-use/UnflaggedOptionConfiguration.html
/usr/share/doc/libjsap-java/api/com/martiansoftware/jsap/ant/package-frame.html
/usr/share/doc/libjsap-java/api/com/martiansoftware/jsap/ant/package-summary.html
/usr/share/doc/libjsap-java/api/com/martiansoftware/jsap/ant/package-tree.html
/usr/share/doc/libjsap-java/api/com/martiansoftware/jsap/ant/package-use.html