private function addGroupsFixtureMapping(string $className, array $groups) : void
    {
        foreach ($groups as $group) {
            $this->groupsFixtureMapping[$group][$className] = true;
        }
    }
private function addGroupsFixtureMapping(string $className, array $groups) : void
    {
        foreach ($groups as $group) {
            $this->groupsFixtureMapping[$group][$className] = true;
        }
    }
private function addGroupsFixtureMapping ( string $ className , array $ groups ) : void { foreach ( $ groups as $ group ) { $ this -> groupsFixtureMapping [ $ group ] [ $ className ] = true ; } }
Generates an array of the groups and their fixtures

@param string[] $groups
Generates an array of the groups and their fixtures