Before this commit, `child_of` operator is managed in the mockServer but not the `parent_of` one. This commit manages `parent_of` operator in mockServer to be able to find the record when the domain used contains that operator task-3376776
Before this commit, `child_of` operator is managed in the mockServer but not the `parent_of` one. This commit manages `parent_of` operator in mockServer to be able to find the record when the domain used contains that operator task-3376776