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);
    }

  @ParametricNullness
  public final T next() {
    if (!hasNext()) {
      throw new NoSuchElementException();
    }
    state = State.NOT_READY;
    // Safe because hasNext() ensures that tryToComputeNext() has put a T into `next`.
    T result = uncheckedCastNullableTToT(next);
    next = null;
    return result;
  }

  /**
   * Returns the next element in the iteration without advancing the iteration, according to the

    Collection<V> collection = asMap().get(key);
    return collection != null && collection.remove(value);
  }

  @CanIgnoreReturnValue
  @Override
  public boolean put(@ParametricNullness K key, @ParametricNullness V value) {
    return get(key).add(value);
  }

  @CanIgnoreReturnValue
  @Override
  public boolean putAll(@ParametricNullness K key, Iterable<? extends V> values) {

                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

# intellij files
.idea/
*.iml
*.ipr
*.iws
build-idea/
# Eclipse and Intellij put there build files in "out"
out/

# include shared intellij config
!.idea/scopes/x_pack.xml
!.idea/inspectionProfiles/Project_Default.xml
!.idea/runConfigurations/Debug_Elasticsearch.xml
!.idea/checkstyle-idea.xml

# These files are generated in the main tree by IntelliJ
benchmarks/src/main/generated/*

# eclipse files
.project

                    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) {

#### Operation { #operation }

Burada "Operation", HTTP "method"larından birini ifade eder.

Şunlardan biri:

* `POST`
* `GET`
* `PUT`
* `DELETE`

...ve daha egzotik olanlar:

* `OPTIONS`
* `HEAD`
* `PATCH`
* `TRACE`

HTTP protokolünde, her bir path ile bu "method"lardan biri (veya birden fazlası) ile iletişim kurabilirsiniz.

        }
        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.