RepositoryMetadata metadata = new SnapshotArtifactRepositoryMetadata(artifact);

        getLogger().info("Retrieving previous build number from " + remoteRepository.getId());
        repositoryMetadataManager.resolveAlways(metadata, localRepository, remoteRepository);

        int buildNumber = 0;
        Metadata repoMetadata = metadata.getMetadata();
        if ((repoMetadata != null)

            } catch (InvalidVersionSpecificationException e) {
                throw new InvalidDependencyVersionException(project.getId(), d, project.getFile(), e);
            }

            if (dependencyArtifact != null) {
                artifacts.add(dependencyArtifact);
            }
        }

        return artifacts;
    }

                Thread owner = aggregatorLock.getOwner();
                MojoDescriptor ownerMojo = owner != null ? mojos.get(owner) : null;
                String str = ownerMojo != null ? " The " + ownerMojo.getId() : "An";
                String msg = str + " aggregator mojo is already being executed "
                        + "in this parallel build, those kind of mojos require exclusive access to "

     */
    void init(ResponseData responseData, ResultData resultData);

    /**
     * Returns the identifier of the access result.
     *
     * @return the identifier
     */
    IDTYPE getId();

    /**
     * Sets the identifier of the access result.
     *
     * @param id the identifier
     */
    void setId(IDTYPE id);

    /**
     * Returns the session identifier.
     *

 */
public interface UrlQueue<IDTYPE> {

    /**
     * Retrieves the unique identifier of the URL queue.
     *
     * @return the unique identifier of type IDTYPE.
     */
    IDTYPE getId();

    /**
     * Sets the unique identifier for the URL queue.
     *
     * @param id the unique identifier to set
     */
    void setId(IDTYPE id);

    /**

    }

    public Map getPluginContext(PluginDescriptor plugin, MavenProject project) {
        Map<String, Map> pluginContextsByKey =
                pluginContextsByProjectAndPluginKey.computeIfAbsent(project.getId(), k -> new HashMap<>());

        return pluginContextsByKey.computeIfAbsent(plugin.getPluginLookupKey(), k -> new HashMap<>());
    }

    public void setFailureBehavior(String failureBehavior) {

        List<Artifact> trial = getTrail();

        List<String> ret = new ArrayList<>(trial.size());

        for (Artifact artifact : trial) {
            ret.add(artifact.getId());
        }

        return ret;
    }

    private List<Artifact> getTrail() throws OverConstrainedVersionException {
        if (trail == null) {
            List<Artifact> ids = new LinkedList<>();

    }

    @Override
    public String toString() {
        StringBuilder buffer = new StringBuilder(128);
        if (mojoDescriptor != null) {
            buffer.append(mojoDescriptor.getId());
        }
        buffer.append(" {execution: ").append(executionId).append('}');
        return buffer.toString();
    }

    public String getGroupId() {
        if (mojoDescriptor != null) {

            if (StringUtil.isBlank(userCode)) {
                userCode = getUserCodeFromUserBean(request);
                if (StringUtil.isBlank(userCode)) {
                    userCode = getId();
                }
            }

            if (StringUtil.isNotBlank(userCode)) {
                updateUserSessionId(userCode);
            }
            return userCode;
        }).orElse(null);

        // always return true
        return Constants.TRUE;
    }

    @Override
    public String getConfigId() {
        return ConfigType.DATA.getConfigId(getId());
    }

    public Map<String, String> getHandlerParameterMap() {
        if (handlerParameterMap == null) {
            handlerParameterMap = ParameterUtil.parse(getHandlerParameter());
        }