## Um aplicativo com callbacks { #an-app-with-callbacks }

Vamos ver tudo isso com um exemplo.

Imagine que você desenvolve um aplicativo que permite criar faturas.

Essas faturas terão um `id`, `title` (opcional), `customer` e `total`.

O usuário da sua API (um desenvolvedor externo) criará uma fatura na sua API com um request POST.

Então sua API irá (vamos imaginar):

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.common.collect;

import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.J2ktIncompatible;
import com.google.common.collect.testing.MapInterfaceTest;
import com.google.common.collect.testing.SortedMapInterfaceTest;
import java.util.SortedMap;
import java.util.TreeMap;

 * the License.
 */

package com.google.common.math;

import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.math.DoubleUtils.IMPLICIT_BIT;
import static com.google.common.math.DoubleUtils.SIGNIFICAND_BITS;
import static com.google.common.math.DoubleUtils.getSignificand;
import static com.google.common.math.DoubleUtils.isFinite;
import static com.google.common.math.DoubleUtils.isNormal;

Репозиторий GitHub: [Full Stack FastAPI Template](https://github.com/tiangolo/full-stack-fastapi-template)

## Шаблон Full Stack FastAPI — Технологический стек и возможности { #full-stack-fastapi-template-technology-stack-and-features }

- ⚡ [**FastAPI**](https://fastapi.tiangolo.com/ru) для бэкенд‑API на Python.
    - 🧰 [SQLModel](https://sqlmodel.tiangolo.com) для взаимодействия с SQL‑базой данных на Python (ORM).

 */

package com.google.common.primitives;

import static com.google.common.primitives.ReflectionFreeAssertThrows.assertThrows;
import static com.google.common.truth.Truth.assertThat;
import static com.google.common.truth.Truth.assertWithMessage;

import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;

    <dependency>
      <groupId>com.google.j2objc</groupId>
      <artifactId>j2objc-annotations</artifactId>
    </dependency>
    <dependency>
      <groupId>com.google.guava</groupId>
      <artifactId>guava-testlib</artifactId>
      <version>${project.version}</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>com.google.guava</groupId>

    url: https://github.com/coderabbitai
  - login: zuplo
    avatarUrl: https://avatars.githubusercontent.com/u/85497839?v=4
    url: https://github.com/zuplo
  - login: blockbee-io
    avatarUrl: https://avatars.githubusercontent.com/u/115143449?u=1b8620c2d6567c4df2111a371b85a51f448f9b85&v=4
    url: https://github.com/blockbee-io
  - login: andrew-propelauth

GitHub-Repository: [Full Stack FastAPI Template](https://github.com/tiangolo/full-stack-fastapi-template)

## Full Stack FastAPI Template – Technologiestack und Funktionen { #full-stack-fastapi-template-technology-stack-and-features }

- ⚡ [**FastAPI**](https://fastapi.tiangolo.com/de) für die Python-Backend-API.
  - 🧰 [SQLModel](https://sqlmodel.tiangolo.com) für die Interaktion mit der Python-SQL-Datenbank (ORM).

 - [Confluence/Jira](https://github.com/codelibs/fess-ds-atlassian)
 - [Box](https://github.com/codelibs/fess-ds-box)
 - [CSV](https://github.com/codelibs/fess-ds-csv)
 - [Datenbank](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)

 - [Confluence/Jira](https://github.com/codelibs/fess-ds-atlassian)
 - [Box](https://github.com/codelibs/fess-ds-box)
 - [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)