* HTTP Basic 认证方式。
    * HTTP Digest，等等。
* `oauth2`：所有的 OAuth2 处理安全性的方式（称为「流程」）。
    *以下几种流程适合构建 OAuth 2.0 身份认证的提供者（例如 Google，Facebook，X (Twitter)，GitHub 等）：
        * `implicit`
        * `clientCredentials`
        * `authorizationCode`
    * 但是有一个特定的「流程」可以完美地用于直接在同一应用程序中处理身份认证：
        * `password`：接下来的几章将介绍它的示例。
* `openIdConnect`：提供了一种定义如何自动发现 OAuth2 身份认证数据的方法。

            },
            "NoncurrentVersionExpiration": {
                "NewerNoncurrentVersions": 5
            }
        }
    ]
}
```
Note: This rule has an implicit zero NoncurrentDays, which makes the expiry of those 'extra' noncurrent versions immediate.

#### 3.2.b Automatic removal of all versions (MinIO only extension)

        fw.println("#");
        fw.println("# The checker does not handle implicit section names, so they must be explicit and declared as: [[section-name]]");
        fw.println("#");

 *
 * For synchronous calls, the easiest way to make sure a response body is closed is with a `try`
 * block. With this structure the compiler inserts an implicit `finally` clause that calls
 * [close()][Response.close] for you.
 *
 * ```java
 * Call call = client.newCall(request);
 * try (Response response = call.execute()) {
 * ... // Use the response.
 * }
 * ```
 *

	// MINIO_KMS_SECRET_KEY_FILE - either to the argument passed to
	// the container or to a default string (e.g. "minio_master_key").
	//
	// We have to distinguish a explicit config from an implicit. Hence,
	// we unset the env. vars if they are set but empty or contain a path
	// which does not exist. The downside of this check is that if
	// MINIO_KMS_SECRET_KEY_FILE is set to a path that does not exist,

class OAuthFlowClientCredentials(OAuthFlow):
    tokenUrl: str


class OAuthFlowAuthorizationCode(OAuthFlow):
    authorizationUrl: str
    tokenUrl: str


class OAuthFlows(BaseModelWithConfig):
    implicit: Optional[OAuthFlowImplicit] = None
    password: Optional[OAuthFlowPassword] = None
    clientCredentials: Optional[OAuthFlowClientCredentials] = None
    authorizationCode: Optional[OAuthFlowAuthorizationCode] = None

    * HTTP Basic認証
    * HTTP ダイジェスト認証など
* `oauth2`: OAuth2のセキュリティ処理方法（「フロー」と呼ばれます）のすべて。
    * これらのフローのいくつかは、OAuth 2.0認証プロバイダ（Google、Facebook、X (Twitter)、GitHubなど）を構築するのに適しています。
        * `implicit`
        * `clientCredentials`
        * `authorizationCode`
    * しかし、同じアプリケーション内で認証を直接処理するために完全に機能する特定の「フロー」があります。
        * `password`: 次のいくつかの章では、その例を紹介します。
* `openIdConnect`: OAuth2認証データを自動的に発見する方法を定義できます。

 * is {@code addAndGet(K, long)}, which adds a {@code long} to the value currently associated with
 * {@code K}. If a key has not yet been associated with a value, its implicit value is zero.
 *
 * <p>Most methods in this class treat absent values and zero values identically, as individually
 * documented. Exceptions to this are {@link #containsKey}, {@link #size}, {@link #isEmpty}, {@link

	}

	_, ok := kvs.Lookup(Enable)
	// Check if state is required
	_, enableRequired := defaultKVS[subSys].Lookup(Enable)
	if !ok && enableRequired {
		// implicit state "on" if not specified.
		kvs.Set(Enable, EnableOn)
	}

	var currKVS KVS
	ck, ok := c[subSys][tgt]
	if !ok {
		currKVS = defaultKVS[subSys].Clone()
	} else {
		currKVS = ck.Clone()

@GwtCompatible
public abstract class MultimapBuilder<K0 extends @Nullable Object, V0 extends @Nullable Object> {
  /*
   * Leaving K and V as upper bounds rather than the actual key and value types allows type
   * parameters to be left implicit more often. CacheBuilder uses the same technique.
   */

  private MultimapBuilder() {}

  private static final int DEFAULT_EXPECTED_KEYS = 8;

  /** Uses a hash table to map keys to value collections. */