/usr/lib/x86_64-linux-gnu/libicapapi.so is in libicapapi-dev 1:0.4.4-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libicapapi.so.4.0.4
/usr/lib/x86_64-linux-gnu/libicapapi.so.4.0.4