throw new IllegalArgumentException(
                        "build.snapshot was set to [" + buildSnapshotSystemProperty + "] but can only be unset or [true|false]");
        }
        loadedProps.put("elasticsearch", elasticsearch);
    }

      TesterRequirements requirements = classTesterRequirementsCache.get(testerClass);
      if (requirements == null) {
        requirements = buildTesterRequirements(testerClass);
        classTesterRequirementsCache.put(testerClass, requirements);
      }
      return requirements;
    }
  }

  /**
   * Get the full set of requirements for a tester class.
   *
   * @param testerMethod a test method of a tester class

        if (handler == null) {
            handler = artifactHandlers.get(type);
            if (handler == null) {
                handler = new DefaultArtifactHandler(type);
            } else {
                allHandlers.put(type, handler);
            }
        }
        return handler;
    }

    }

    @Override
    @SuppressWarnings("unchecked")
    public void execute(ViolationCheckContext context) {
        Map<String, Object> userData = (Map<String, Object>) context.getUserData();
        userData.put("currentVersion", currentVersion);
    }

        for (Lifecycle lifecycle : getLifeCycles()) {
            for (String phase : lifecycle.getPhases()) {
                // The first definition wins.
                Lifecycle original = phaseToLifecycleMap.put(phase, lifecycle);
                if (original != null && logger.isWarnEnabled()) {
                    logger.warn(
                            "Duplicated lifecycle phase {}. Defined in {} but also in {}",

                Map<PhaseId, List<MojoExecution>> phaseBindings = new TreeMap<>(
                        Comparator.comparing(PhaseId::toString, new PhaseComparator(lifecycle.getPhases())));
                mappings.put(phase, phaseBindings);
            }
        }

        /*
         * Grab plugin executions that are bound to the selected lifecycle phases from project. The effective model of

    }

    private void writeLastUpdated(File touchfile, String key, String error) {
        HashMap<String, String> update = new HashMap<>();
        update.put(key, Long.toString(System.currentTimeMillis()));
        update.put(key + ERROR_KEY_SUFFIX, error); // error==null => remove mapping
        trackingFileManager.update(touchfile, update);
    }

    Date readLastUpdated(File touchfile, String key) {

                    registration.setState(WitnessRegistrationState.REGISTERED);
                    registration.setContextHandle(response.getContextHandle());
                    registrations.put(registration.getRegistrationId(), registration);
                    listeners.put(registration.getRegistrationId(), listener);

                    // Start async notification monitoring for this registration

                throw new VersionResolutionException(result);
            }
        }

        if (cacheKey != null && metadata != null && isSafelyCacheable(session, artifact)) {
            cache.put(session, cacheKey, new Record(result.getVersion(), result.getRepository()));
        }

        return result;
    }

    private boolean resolve(VersionResult result, Map<String, VersionInfo> infos, String key) {

        }
        if (logger.isDebugEnabled()) {
            logger.debug("Loaded DataStore: name={}", name);
        }
        dataStoreMap.put(name.toLowerCase(Locale.ROOT), dataStore);
        dataStoreMap.put(dataStore.getClass().getSimpleName().toLowerCase(Locale.ROOT), dataStore);
    }

    /**
     * Retrieves a data store instance by name.