if err := DB.Create(&orders).Error; err != nil {
		t.Errorf("failed to create orders, got %v", err)
	}

	coupon2 := Coupon{
		AppliesToProduct: []*CouponProduct{{Desc: "coupon-description"}},
	}

	DB.Session(&gorm.Session{FullSaveAssociations: true}).Create(&coupon2)
	var result Coupon
	if err := DB.Preload("AppliesToProduct").First(&result, "id = ?", coupon2.ID).Error; err != nil {

* E muitas outras coisas...

Tudo isso, enquanto minimizamos a repetição de código.

## Primeiros passos { #first-steps }

Vamos ver um exemplo simples. Tão simples que não será muito útil, por enquanto.

Mas dessa forma podemos focar em como o sistema de **Injeção de Dependência** funciona.

### Criando uma dependência, ou "injetável" { #create-a-dependency-or-dependable }

Primeiro vamos focar na dependência.

 - [CSV](https://github.com/codelibs/fess-ds-csv)
 - [Base de données](https://github.com/codelibs/fess-ds-db)
 - [Dropbox](https://github.com/codelibs/fess-ds-dropbox)
 - [Elasticsearch](https://github.com/codelibs/fess-ds-elasticsearch)
 - [Git](https://github.com/codelibs/fess-ds-git)
 - [Gitbucket](https://github.com/codelibs/fess-ds-gitbucket)
 - [G Suite](https://github.com/codelibs/fess-ds-gsuite)

 - [CSV](https://github.com/codelibs/fess-ds-csv)
 - [Database](https://github.com/codelibs/fess-ds-db)
 - [Dropbox](https://github.com/codelibs/fess-ds-dropbox)
 - [Elasticsearch](https://github.com/codelibs/fess-ds-elasticsearch)
 - [Git](https://github.com/codelibs/fess-ds-git)
 - [Gitbucket](https://github.com/codelibs/fess-ds-gitbucket)
 - [G Suite](https://github.com/codelibs/fess-ds-gsuite)
 - [JSON](https://github.com/codelibs/fess-ds-json)

import org.codelibs.core.misc.Tuple3;
import org.codelibs.core.misc.Tuple4;
import org.codelibs.fess.Constants;
import org.codelibs.fess.helper.PermissionHelper;
import org.codelibs.fess.mylasta.action.FessUserBean;
import org.codelibs.fess.taglib.FessFunctions;
import org.codelibs.fess.util.ComponentUtil;
import org.codelibs.fess.util.JvmUtil;
import org.codelibs.fess.util.PrunedTag;
import org.dbflute.optional.OptionalThing;

                .desc("Define a user property")
                .build());
        options.addOption(Option.builder(Character.toString(OFFLINE))
                .longOpt("offline")
                .desc("Work offline")
                .build());
        options.addOption(Option.builder(Character.toString(VERSION))
                .longOpt("version")
                .desc("Display version information")

	<modelVersion>4.0.0</modelVersion>
	<groupId>org.codelibs.fess</groupId>
	<artifactId>fess-crawler-parent</artifactId>
	<version>15.4.1-SNAPSHOT</version>
	<packaging>pom</packaging>
	<name>Fess Crawler Project</name>
	<description>Fess Crawler is Crawler Framework.</description>
	<url>https://github.com/codelibs/fess-crawler</url>
	<inceptionYear>2009</inceptionYear>
	<licenses>
		<license>

/target/
/.settings/
/fess-crawler*/target/
/fess-crawler*/bin/
/fess-crawler*/mydbflute/
/fess-crawler*/.project
/fess-crawler*/.classpath
/fess-crawler*/.settings/
/fess-crawler*/dependency-reduced-pom.xml
/fess-crawler*/dbflute_crawler/log/*.log
/fess-crawler*/dbflute_crawler/schema/project-schema-robot.xml
/fess-crawler/phantomjsdriver.log
.project
.idea
*.iml
/.vscode

import org.codelibs.fess.crawler.exception.ChildUrlsException;
import org.codelibs.fess.crawler.exception.CrawlerSystemException;
import org.codelibs.fess.crawler.exception.CrawlingAccessException;
import org.codelibs.fess.crawler.helper.impl.MimeTypeHelperImpl;
import org.dbflute.utflute.core.PlainTestCase;
import org.testcontainers.containers.GenericContainer;
import org.testcontainers.containers.wait.strategy.Wait;

 */
package org.codelibs.fess.app.web.admin;

import org.codelibs.fess.annotation.Secured;
import org.codelibs.fess.app.web.admin.accesstoken.AdminAccesstokenAction;
import org.codelibs.fess.app.web.admin.backup.AdminBackupAction;
import org.codelibs.fess.app.web.admin.badword.AdminBadwordAction;
import org.codelibs.fess.app.web.admin.boostdoc.AdminBoostdocAction;
import org.codelibs.fess.app.web.admin.crawlinginfo.AdminCrawlinginfoAction;