/usr/share/doc/libvldocking-java/api/com/vlsolutions/swing/docking/animation/ is in libvldocking-java 2.1.4-4.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/libvldocking-java/api/com/vlsolutions/swing/docking/animation/AnimationEvent.html
/usr/share/doc/libvldocking-java/api/com/vlsolutions/swing/docking/animation/AnimationListener.html
/usr/share/doc/libvldocking-java/api/com/vlsolutions/swing/docking/animation/ComponentAnimator.html
/usr/share/doc/libvldocking-java/api/com/vlsolutions/swing/docking/animation/class-use/
/usr/share/doc/libvldocking-java/api/com/vlsolutions/swing/docking/animation/class-use/AnimationEvent.html
/usr/share/doc/libvldocking-java/api/com/vlsolutions/swing/docking/animation/class-use/AnimationListener.html
/usr/share/doc/libvldocking-java/api/com/vlsolutions/swing/docking/animation/class-use/ComponentAnimator.html
/usr/share/doc/libvldocking-java/api/com/vlsolutions/swing/docking/animation/package-frame.html
/usr/share/doc/libvldocking-java/api/com/vlsolutions/swing/docking/animation/package-summary.html
/usr/share/doc/libvldocking-java/api/com/vlsolutions/swing/docking/animation/package-tree.html
/usr/share/doc/libvldocking-java/api/com/vlsolutions/swing/docking/animation/package-use.html