/usr/share/man/man3/pmdaCacheStore.3.gz is in libpcp-pmda3-dev 3.10.8build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man3/pmdaCacheLookup.3.gz
/usr/share/man/man3/pmdaCacheLookup.3.gz