*
     * @return an optional containing the web configuration, or empty if no web URLs were found
     */
    public OptionalEntity<WebConfig> getWebConfig() {
        return OptionalUtil.ofNullable(webConfig);
    }

    /**
     * Gets the file crawling configuration generated from the parsed GSA config.
     *

	// See https://docs.aws.amazon.com/AmazonS3/latest/API/API_PutBucketLifecycle.html
	// In the newer PutBucketLifecycleConfiguration API, Rule has a prefix field that is deprecated, and there exists an optional
	// Filter field, and within it, an optional Prefix field.
	// See https://docs.aws.amazon.com/AmazonS3/latest/API/API_PutBucketLifecycleConfiguration.html
	// A valid rule could be a pre-existing one created using the now deprecated PutBucketLifecycle.

type Error struct {
	Code    int    // The HTTP status code returned to the client
	APICode string // The API error code identifying the error
	Err     string // The error message returned to the client
	Cause   error  // Optional, lower level error cause.
}

func (e Error) Error() string {
	if e.Cause == nil {
		return e.Err
	}
	return fmt.Sprintf("%s: %v", e.Err, e.Cause)
}

func errKeyCreationFailed(err error) Error {

import java.util.Locale;

import org.codelibs.fess.opensearch.config.bsentity.BsCrawlingInfoParam;
import org.codelibs.fess.opensearch.config.exbhv.CrawlingInfoBhv;
import org.codelibs.fess.util.ComponentUtil;
import org.dbflute.optional.OptionalEntity;

/**
 * @author ESFlute (using FreeGen)
 */
public class CrawlingInfoParam extends BsCrawlingInfoParam {

    private static final long serialVersionUID = 1L;

Entonces, si deseas recibir actualizaciones parciales que puedan omitir todos los atributos, necesitas tener un modelo con todos los atributos marcados como opcionales (con valores por defecto o `None`).

Para distinguir entre los modelos con todos los valores opcionales para **actualizaciones** y modelos con valores requeridos para **creación**, puedes utilizar las ideas descritas en [Modelos Extra](extra-models.md){.internal-link target=_blank}.

import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import java.util.ListIterator;

import org.codelibs.curl.CurlResponse;
import org.dbflute.optional.OptionalEntity;
import org.lastaflute.web.servlet.request.stream.WrittenStreamOut;

/**
 * Abstract base class for dictionary files that manage dictionary items.

import org.codelibs.fess.helper.SystemHelper;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.opensearch.config.exbhv.JobLogBhv;
import org.codelibs.fess.util.ComponentUtil;
import org.dbflute.optional.OptionalThing;
import org.lastaflute.core.time.TimeManager;
import org.lastaflute.job.LaCron;
import org.lastaflute.job.LaJob;
import org.lastaflute.job.LaJobRunner;
import org.lastaflute.job.LaJobScheduler;

import org.codelibs.fess.opensearch.config.exentity.JobLog;
import org.codelibs.fess.opensearch.config.exentity.ScheduledJob;
import org.codelibs.fess.util.ComponentUtil;
import org.dbflute.optional.OptionalThing;
import org.lastaflute.job.JobManager;
import org.lastaflute.job.LaCron;
import org.lastaflute.job.LaJobRuntime;
import org.lastaflute.job.LaScheduledJob;
import org.lastaflute.job.key.LaJobUnique;

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

`OAuth2PasswordRequestForm` é uma dependência de classe que declara um corpo de formulário com:

* O `username`.
* A `password`.
* Um campo `scope` opcional como uma string grande, composta de strings separadas por espaços.
* Um `grant_type` opcional.

/// tip | Dica

A especificação OAuth2 na verdade *requer* um campo `grant_type` com um valor fixo de `password`, mas `OAuth2PasswordRequestForm` não o impõe.