/usr/share/doc/libcglib3-java/api/net/sf/cglib/reflect/ is in libcglib3-java-doc 3.1+dfsg-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/libcglib3-java/api/net/sf/cglib/reflect/ConstructorDelegate.Generator.html
/usr/share/doc/libcglib3-java/api/net/sf/cglib/reflect/ConstructorDelegate.html
/usr/share/doc/libcglib3-java/api/net/sf/cglib/reflect/FastClass.Generator.html
/usr/share/doc/libcglib3-java/api/net/sf/cglib/reflect/FastClass.html
/usr/share/doc/libcglib3-java/api/net/sf/cglib/reflect/FastConstructor.html
/usr/share/doc/libcglib3-java/api/net/sf/cglib/reflect/FastMember.html
/usr/share/doc/libcglib3-java/api/net/sf/cglib/reflect/FastMethod.html
/usr/share/doc/libcglib3-java/api/net/sf/cglib/reflect/MethodDelegate.Generator.html
/usr/share/doc/libcglib3-java/api/net/sf/cglib/reflect/MethodDelegate.html
/usr/share/doc/libcglib3-java/api/net/sf/cglib/reflect/MulticastDelegate.Generator.html
/usr/share/doc/libcglib3-java/api/net/sf/cglib/reflect/MulticastDelegate.html
/usr/share/doc/libcglib3-java/api/net/sf/cglib/reflect/package-frame.html
/usr/share/doc/libcglib3-java/api/net/sf/cglib/reflect/package-summary.html
/usr/share/doc/libcglib3-java/api/net/sf/cglib/reflect/package-tree.html