/** Returns a plan to attempt. */
  @Throws(IOException::class)
  fun plan(): Plan

  /**
   * Returns true if there's more route plans to try.
   *
   * @param failedConnection an optional connection that was resulted in a failure. If the failure
   *     is recoverable, the connection's route may be recovered for the retry.
   */
  fun hasNext(failedConnection: RealConnection? = null): Boolean

  /**

)
```

The "Metadata" section contains a single version, encoded in similar fashion as each version in the `Versions` array
of the previous version.

## Inline Data

Inline data is optional. If no inline data is present, it is encoded as 0 bytes.

| Entry               | Encoding                    | Content
| --------------------|-----------------------------|----------------------------------------

* 変数`prices`は`dict`であり:
    * この`dict`のキーは`str`型です。（つまり、各項目の名前）
    * この`dict`の値は`float`型です。（つまり、各項目の価格）

#### `Optional`

また、`Optional`を使用して、変数が`str`のような型を持つことを宣言することもできますが、それは「オプション」であり、`None`にすることもできます。

```Python hl_lines="1 4"
{!../../docs_src/python_types/tutorial009.py!}
```

ただの`str`の代わりに`Optional[str]`を使用することで、エディタは値が常に`str`であると仮定している場合に実際には`None`である可能性があるエラーを検出するのに役立ちます。

#### ジェネリック型

import org.dbflute.dbmeta.DBMetaProvider;
import org.dbflute.dbway.DBDef;
import org.dbflute.jdbc.SQLExceptionDigger;
import org.dbflute.jdbc.StatementConfig;
import org.dbflute.jdbc.StatementFactory;
import org.dbflute.optional.RelationOptionalFactory;
import org.dbflute.outsidesql.OutsideSqlOption;
import org.dbflute.outsidesql.factory.OutsideSqlExecutorFactory;
import org.dbflute.s2dao.jdbc.TnResultSetHandlerFactory;

import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.taglib.FessFunctions;
import org.codelibs.fess.util.ComponentUtil;
import org.dbflute.cbean.result.PagingResultBean;
import org.dbflute.optional.OptionalEntity;

import jakarta.annotation.Resource;
import jakarta.servlet.http.HttpServletRequest;

public class AccessTokenService {

    @Resource
    protected AccessTokenBhv accessTokenBhv;

By default, the temporary security credentials created by AssumeRoleWithWebIdentity last for one hour. However, the optional DurationSeconds parameter can be used to specify the validity duration of the generated credentials. This value varies from 900 seconds (15 minutes) up to the maximum session duration of 365 days.

import org.dbflute.mail.send.supplement.async.SMailAsyncStrategy;
import org.dbflute.mail.send.supplement.filter.SMailSubjectFilter;
import org.dbflute.mail.send.supplement.label.SMailLabelStrategy;
import org.dbflute.optional.OptionalThing;
import org.dbflute.util.DfStringUtil;
import org.lastaflute.core.magic.async.AsyncManager;
import org.lastaflute.core.magic.async.ConcurrentAsyncCall;
import org.lastaflute.core.message.MessageManager;

 * type, scope and obligation (whether the dependency is optional or mandatory).
 * The version and the obligation may not be defined precisely.</p>
 *
 * <p>{@link org.apache.maven.api.Dependency} instances are the pointed dependencies in the repository.
 * They are created when <dfn>resolving</dfn> a {@code DependencyCoordinates}.
 * Resolving is the process that clarifies the obligation (optional or mandatory status),

      Nvidia GPUs".
    enabled_by_default: boolean for default behavior.
    question: optional string for how to ask for user input.
    yes_reply: optional string for reply when feature is enabled.
    no_reply: optional string for reply when feature is disabled.

  Returns:
    boolean value of the variable.

  Raises:

import org.codelibs.fess.entity.FessUser;
import org.codelibs.fess.mylasta.action.FessUserBean;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.util.ComponentUtil;
import org.dbflute.optional.OptionalThing;

public class LdapUser implements FessUser {

    private static final long serialVersionUID = 1L;

    protected Hashtable<String, String> env;

    protected String name;