// which had real keys with null values.)
    Map<String, String> removalNotifications = new HashMap<>();
    for (RemovalNotification<String, String> notification : listener) {
      removalNotifications.put(notification.getKey(), notification.getValue());
      assertWithMessage("Unexpected key/value pair passed to removalListener")
          .that(notification.getValue())
          .isEqualTo(notification.getKey());
    }

    // which had real keys with null values.)
    Map<String, String> removalNotifications = new HashMap<>();
    for (RemovalNotification<String, String> notification : listener) {
      removalNotifications.put(notification.getKey(), notification.getValue());
      assertWithMessage("Unexpected key/value pair passed to removalListener")
          .that(notification.getValue())
          .isEqualTo(notification.getKey());
    }

            if (servers != null) {
                for (Server server : servers) {
                    if (!serversById.containsKey(server.getId())) {
                        serversById.put(server.getId(), server);
                    }
                }
            }

            for (ArtifactRepository repository : repositories) {
                Server server = serversById.get(repository.getId());

                    result.addVersionRangeViolation(e);
                }
            }
        } else {
            previousNodes = new ArrayList<>();

            resolvedArtifacts.put(key, previousNodes);
        }
        previousNodes.add(node);

        if (node.isActive()) {
            fireEvent(ResolutionListener.INCLUDE_ARTIFACT, listeners, node);
        }

        void mergeAll(Collection<V> vs, Remapping<V> remapping) {
            if (map == null) {
                map = new LinkedHashMap<>(list.size() + vs.size());
                for (V v : list) {
                    map.put(keyComputer.key(v), v);
                }
                list = null;
            }
            if (vs instanceof MergingList mergingList && mergingList.map != null) {

                                    .setMessage(e.getMessage())
                                    .setException(e));
                        }
                        cache.put(value, c);
                    }
                    return c;
                }
                return value;
            }
        };
    }

    @SuppressWarnings("StringEquality")

如果你添加了返回类型注解，工具和编辑器会（正确地）报错，提示你的函数返回的类型（例如 `dict`）与声明的类型（例如一个 Pydantic 模型）不同。

在这些情况下，你可以使用*路径操作装饰器*参数 `response_model`，而不是返回类型。

你可以在任意*路径操作*中使用 `response_model` 参数：

* `@app.get()`
* `@app.post()`
* `@app.put()`
* `@app.delete()`
* 等等。

{* ../../docs_src/response_model/tutorial001_py310.py hl[17,22,24:27] *}

/// note | 注意

注意，`response_model` 是「装饰器」方法（`get`、`post` 等）的一个参数。不是你的*路径操作函数*的参数，不像所有查询参数和请求体那样。

///

        if (logger.isDebugEnabled()) {
            logger.debug("Storing state in session: {}", stateData);
        }
        stateMap.put(state, stateData);
    }

    /**
     * Processes authentication data from the OAuth2 callback.
     * @param request The HTTP servlet request containing authentication data.

                    projectArtifacts.add(artifact);
                }
            }

            return projectArtifacts;
        }

        public void addArtifact(ArtifactSpec spec) {
            artifacts.put(getKey(spec.artifact), spec);

            String key = spec.artifact.getDependencyConflictId();
            List<ArtifactVersion> artifactVersions = versions.computeIfAbsent(key, k -> new ArrayList<>());

        transport.connect();
        
        // Perform channel binding
        performChannelBinding(channel);
        
        // Add to active channels
        channels.put(channelId, channel);
        channel.setState(ChannelState.ESTABLISHED);
        
        log.info("Established channel {} using {}:{} -> {}:{}", 
            channelId, localIf.getAddress(), remoteIf.getAddress());
    }