/usr/share/doc/libplexus-interpolation-java/api/org/codehaus/plexus/interpolation/object/ is in libplexus-interpolation-java-doc 1.24-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/libplexus-interpolation-java/api/org/codehaus/plexus/interpolation/object/FieldBasedObjectInterpolator.html
/usr/share/doc/libplexus-interpolation-java/api/org/codehaus/plexus/interpolation/object/ObjectInterpolationWarning.html
/usr/share/doc/libplexus-interpolation-java/api/org/codehaus/plexus/interpolation/object/ObjectInterpolator.html
/usr/share/doc/libplexus-interpolation-java/api/org/codehaus/plexus/interpolation/object/class-use/
/usr/share/doc/libplexus-interpolation-java/api/org/codehaus/plexus/interpolation/object/class-use/FieldBasedObjectInterpolator.html
/usr/share/doc/libplexus-interpolation-java/api/org/codehaus/plexus/interpolation/object/class-use/ObjectInterpolationWarning.html
/usr/share/doc/libplexus-interpolation-java/api/org/codehaus/plexus/interpolation/object/class-use/ObjectInterpolator.html
/usr/share/doc/libplexus-interpolation-java/api/org/codehaus/plexus/interpolation/object/package-frame.html
/usr/share/doc/libplexus-interpolation-java/api/org/codehaus/plexus/interpolation/object/package-summary.html
/usr/share/doc/libplexus-interpolation-java/api/org/codehaus/plexus/interpolation/object/package-tree.html
/usr/share/doc/libplexus-interpolation-java/api/org/codehaus/plexus/interpolation/object/package-use.html