code: package org.eclipse.steady.kb.task;
  
  import java.util.ArrayList;
  import org.eclipse.steady.backend.BackendConnectionException;
  import org.eclipse.steady.backend.BackendConnector;
  import org.eclipse.steady.goals.GoalContext;
  import org.eclipse.steady.shared.enums.AffectedVersionSource;
  import org.eclipse.steady.shared.json.model.AffectedLibrary;
  import org.eclipse.steady.shared.json.model.Artifact;
  import org.eclipse.steady.shared.json.model.Bug;
  import org.eclipse.steady.shared.json.model.LibraryId;
  
  public class MockBackConnector extends BackendConnector {
    private String uploadJson;
  
    @Override
    public AffectedLibrary[] getBugAffectedLibraries(
        String _bugId,
        String _group,
        String _artifact,
        String _version,
        AffectedVersionSource _source)
        throws BackendConnectionException {
      if (_artifact.equals("javaee-api") && _version.equals("6.0")) {
        AffectedLibrary[] arr1 = {
          new AffectedLibrary(new Bug(_bugId), new LibraryId("javax", "javaee-api", "6.0"), true)
        };
        return arr1;
      }
      return null;
    }
  
    @Override
    public Artifact getArtifact(String _g, String _a, String _v) throws BackendConnectionException {
      if (_a.equals("javax.faces") && _v.equals("2.3.7")) {
        return null;
      }
      return new Artifact(_g, _a, _v);
    }
  
    @Override
    public Artifact[] getAllArtifactsGroupArtifact(String _g, String _a)
        throws BackendConnectionException {
      ArrayList<Artifact> artifacts = new ArrayList<>();
      if (_g.equals("javax") && _a.equals("javaee-api")) {
        artifacts.add(new Artifact("javax", "javaee-api", "6.0"));
        artifacts.add(new Artifact("javax", "javaee-api", "7.0"));
        artifacts.add(new Artifact("javax", "javaee-api", "8.0"));
      } else if (_g.equals("javax") && _a.equals("javaee-web-api")) {
        artifacts.add(new Artifact("javax", "javaee-web-api", "6.0"));
        artifacts.add(new Artifact("javax", "javaee-web-api", "7.0"));
        artifacts.add(new Artifact("javax", "javaee-web-api", "8.0.1"));
      } else {
        return null;
      }
  
      return artifacts.toArray(new Artifact[artifacts.size()]);
    }
  
    @Override
    public void uploadBugAffectedLibraries(
        GoalContext _g, String _bugId, String _json, AffectedVersionSource _source)
        throws BackendConnectionException {
      uploadJson = _json;
    }
  
    @Override
    public void uploadChangeList(String _bug, String _json) throws BackendConnectionException {
      uploadJson = _json;
    }
  
    @Override
    public String getCVE(String _bugId) throws BackendConnectionException {
      return "{\n" + "  \"summary\": \"Test Desc\"\n" + "}";
    }
  
    @Override
    public boolean isBugExisting(String _bug) throws BackendConnectionException {
      if (_bug.equals("CVE-TEST01")) {
        return true;
      }
      return false;
    }
  
    public String getUploadJson() {
      return uploadJson;
    }
  }
  