/usr/share/doc/libjmock2-java/api/org/jmock/internal/matcher/ is in libjmock2-java-doc 2.8.2-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/libjmock2-java/api/org/jmock/internal/matcher/AllParametersMatcher.html
/usr/share/doc/libjmock2-java/api/org/jmock/internal/matcher/MethodMatcher.html
/usr/share/doc/libjmock2-java/api/org/jmock/internal/matcher/MethodNameMatcher.html
/usr/share/doc/libjmock2-java/api/org/jmock/internal/matcher/MockObjectMatcher.html
/usr/share/doc/libjmock2-java/api/org/jmock/internal/matcher/ParametersMatcher.html
/usr/share/doc/libjmock2-java/api/org/jmock/internal/matcher/class-use/
/usr/share/doc/libjmock2-java/api/org/jmock/internal/matcher/class-use/AllParametersMatcher.html
/usr/share/doc/libjmock2-java/api/org/jmock/internal/matcher/class-use/MethodMatcher.html
/usr/share/doc/libjmock2-java/api/org/jmock/internal/matcher/class-use/MethodNameMatcher.html
/usr/share/doc/libjmock2-java/api/org/jmock/internal/matcher/class-use/MockObjectMatcher.html
/usr/share/doc/libjmock2-java/api/org/jmock/internal/matcher/class-use/ParametersMatcher.html
/usr/share/doc/libjmock2-java/api/org/jmock/internal/matcher/package-frame.html
/usr/share/doc/libjmock2-java/api/org/jmock/internal/matcher/package-summary.html
/usr/share/doc/libjmock2-java/api/org/jmock/internal/matcher/package-tree.html
/usr/share/doc/libjmock2-java/api/org/jmock/internal/matcher/package-use.html