import com.khartec.waltz.service.changelog.ChangeLogService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.Collection;
import java.util.List;
<BUG>import java.util.Map;
import java.util.stream.Collectors;</BUG>
import static com.khartec.waltz.common.Checks.checkNotNull;
import static com.khartec.waltz.common.MapUtilities.indexBy;
@Service

import com.khartec.waltz.service.changelog.ChangeLogService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.stream.Collectors;
import static com.khartec.waltz.common.Checks.checkNotNull;
import static com.khartec.waltz.common.MapUtilities.indexBy;
@Service
