/usr/lib/x86_64-linux-gnu/libapiextractor.so is in libapiextractor-dev 0.10.10-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libapiextractor.so.0.10
/usr/lib/x86_64-linux-gnu/libapiextractor.so.0.10