find the Android Guava source in the [`android` directory].

[`android` directory]: https://github.com/google/guava/tree/master/android

## Adding Guava to your build

Guava's Maven group ID is `com.google.guava`, and its artifact ID is `guava`.
Guava provides two different "flavors": one for use on a (Java 8+) JRE and one
for use on Android or by any library that wants to be compatible with Android.

import jakarta.validation.constraints.Size;

/**
 * @author Keiichi Watanabe
 */
public class EditForm extends CreateForm {

    @Required
    @Size(max = 1000)
    public String id;

    @Size(max = 1000)
    public String updatedBy;

    @ValidateTypeFailure
    public Long updatedTime;

    @Required
    @ValidateTypeFailure
    public Integer versionNo;

If you check the previous app, in the UI you can see that, up to now, it lets the client decide the `id` of the `Hero` to create. 😱

We shouldn't let that happen, they could overwrite an `id` we already have assigned in the DB. Deciding the `id` should be done by the **backend** or the **database**, **not by the client**.

/**
 * Tests {@link DefaultProfileSelector}.
 */
public class DefaultProfileSelectorTest {
    private Profile newProfile(String id) {
        Activation activation = new Activation();
        Profile profile = new Profile();
        profile.setId(id);
        profile.setActivation(activation);
        return profile;
    }

    @Test
    void testThrowingActivator() {

                    "parameters": [
                        {
                            "required": True,
                            "schema": {"title": "Item Id", "type": "string"},
                            "name": "item_id",
                            "in": "path",
                        }
                    ],
                }
            },

                    "parameters": [
                        {
                            "required": True,
                            "schema": {"title": "Item Id", "type": "string"},
                            "name": "item_id",
                            "in": "path",
                        }
                    ],
                }
            },

    private int currentPageNumber;

    public String id;

    public String name;

    public String versionNo;

    public void clear() {
        allRecordCount = 0;
        allPageCount = 0;
        existPrePage = false;
        existNextPage = false;
        pageSize = getDefaultPageSize();
        currentPageNumber = getDefaultCurrentPageNumber();

        id = null;
        name = null;
        versionNo = null;

    private int pageSize;

    private int currentPageNumber;

    public String id;

    public void clear() {
        allRecordCount = 0;
        allPageCount = 0;
        existPrePage = false;
        existNextPage = false;
        pageSize = getDefaultPageSize();
        currentPageNumber = getDefaultCurrentPageNumber();

        id = null;
    }

    protected int getDefaultPageSize() {

                        </div>
                        <div class="card-body">
                            <%-- Message --%>
                            <div>
                                <la:info id="msg" message="true">
                                    <div class="alert alert-info">${msg}</div>
                                </la:info>
                                <la:errors/>
                            </div>

Sie könnten beispielsweise sicherstellen, dass jede *Pfadoperation* einen Tag hat, und dann die Operation-ID basierend auf dem **Tag** und dem **Namen** der *Pfadoperation* (dem Funktionsnamen) generieren.

### Funktion zum Generieren einer eindeutigen ID erstellen