/usr/share/doc/libwerken.xpath-java/api/package-list is in libwerken.xpath-java-doc 0.9.4-14.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 | com.werken.xpath
com.werken.xpath.function
com.werken.xpath.impl
com.werken.xpath.parser
com.werken.xpath.util
|