Follow below steps to enable and use AlertManager.

## Deploy and start AlertManager
Install Prometheus AlertManager from https://prometheus.io/download/ and create configuration as below

```yaml
route:
  group_by: ['alertname']
  group_wait: 30s
  group_interval: 5m
  repeat_interval: 1h
  receiver: 'web.hook'
receivers:
  - name: 'web.hook'
    webhook_configs:
      - url: 'http://127.0.0.1:8010/webhook'

    //                                                                           =========
    private static final GroupDbm _instance = new GroupDbm();

    private GroupDbm() {
    }

    public static GroupDbm getInstance() {
        return _instance;
    }

    // ===================================================================================

 */
package org.codelibs.fess.opensearch.user.cbean;

import org.codelibs.fess.opensearch.user.cbean.bs.BsGroupCB;

/**
 * @author ESFlute (using FreeGen)
 */
public class GroupCB extends BsGroupCB {

    //                                                                             Control
    //                                                                             =======
    @Override
    public GroupDbm asDBMeta() {
        return GroupDbm.getInstance();
    }

    @Override
    public String asTableDbName() {
        return "group";
    }

    @Override
    public boolean hasSpecifiedColumn() {

        return Group.class;
    }

    @Override
    protected Class<GroupCB> typeOfHandlingConditionBean() {
        return GroupCB.class;
    }

    public ListResultBean<Group> selectList(CBCall<GroupCB> cbLambda) {
        return facadeSelectList(createCB(cbLambda));
    }

    public PagingResultBean<Group> selectPage(CBCall<GroupCB> cbLambda) {
        // #pending same?

            val testId = scenarioObj["testId"] as String
            val groups =
                (scenarioObj["groups"] as List<Map<String, Any>>).map { groupObj ->
                    val testProject = groupObj["testProject"] as String
                    val coverage =
                        (groupObj["coverage"] as Map<String, List<String>>)
                            .map { (key, value) ->

    }

    @Override
    public Model findModel(Artifact artifact) {
        if (GROUP_ID.equals(artifact.getGroupId())
                && ARTIFACT_ID.equals(artifact.getArtifactId())
                && VERSION.equals(artifact.getVersion())) {
            Model m = new Model();
            m.setArtifactId(ARTIFACT_ID);
            m.setGroupId(GROUP_ID);
            m.setVersion(VERSION);
            Repository repository = new Repository();

    //                                                                             DB Meta
    //                                                                             =======
    @Override
    public GroupDbm asDBMeta() {
        return GroupDbm.getInstance();
    }

    @Override
    public String asTableDbName() {
        return "group";
    }

 *
 */
@PlexusTest
@Deprecated
public abstract class AbstractConflictResolverTest {
    // constants --------------------------------------------------------------

    private static final String GROUP_ID = "test";

    // fields -----------------------------------------------------------------

    protected Artifact a1;

    protected Artifact a2;

    protected Artifact b1;

import org.codelibs.core.beans.util.BeanUtil;
import org.codelibs.fess.Constants;
import org.codelibs.fess.app.pager.GroupPager;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.opensearch.user.cbean.GroupCB;
import org.codelibs.fess.opensearch.user.exbhv.GroupBhv;
import org.codelibs.fess.opensearch.user.exbhv.UserBhv;
import org.codelibs.fess.opensearch.user.exentity.Group;
import org.codelibs.fess.util.ComponentUtil;