* governing permissions and limitations under the License.
 */
package org.codelibs.fess.app.web.admin.relatedcontent;

import org.lastaflute.web.validation.Required;
import org.lastaflute.web.validation.theme.conversion.ValidateTypeFailure;

import jakarta.validation.constraints.Size;

/**
 * Form class for editing related content configurations in the admin interface.

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.app.web.admin.webauth;

import org.lastaflute.web.validation.Required;
import org.lastaflute.web.validation.theme.conversion.ValidateTypeFailure;

import jakarta.validation.constraints.Size;

/**
 * Form class for editing web authentication configurations in the admin interface.

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.app.web.admin.dataconfig;

import org.lastaflute.web.validation.Required;
import org.lastaflute.web.validation.theme.conversion.ValidateTypeFailure;

import jakarta.validation.constraints.Size;

/**
 * Form class for editing data crawling configurations in the admin interface.

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.app.web.admin.group;

import org.lastaflute.web.validation.Required;
import org.lastaflute.web.validation.theme.conversion.ValidateTypeFailure;

import jakarta.validation.constraints.Size;

/**
 * Form class for editing user groups in the admin interface.

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.app.web.admin.pathmap;

import org.lastaflute.web.validation.Required;
import org.lastaflute.web.validation.theme.conversion.ValidateTypeFailure;

import jakarta.validation.constraints.Size;

/**
 * Form class for editing path mapping configurations in the admin interface.

                                "content": {"application/json": {"schema": {}}},
                            },
                            "422": {
                                "description": "Validation Error",
                                "content": {
                                    "application/json": {
                                        "schema": {

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.app.web.admin.searchlist;

import org.lastaflute.web.validation.Required;

import jakarta.validation.constraints.Size;

/**
 * Form class for deleting documents from search results in the admin interface.
 * Contains query and document ID fields for targeted document deletion.
 */

Another big feature needed by APIs is data validation, making sure that the data is valid, given certain parameters. For example, that some field is an `int`, and not some random string. This is especially useful for incoming data.

Without a data validation system, you would have to do all the checks by hand, in code.

        Doc(
            """
            'Whitelist' validation step. The parameter field will be the single one
            allowed by the alias or set of aliases defined.
            """
        ),
    ] = None,
    serialization_alias: Annotated[
        str | None,
        Doc(
            """
            'Blacklist' validation step. The vanilla parameter field will be the

                                "content": {"application/json": {"schema": {}}},
                            },
                            "422": {
                                "description": "Validation Error",
                                "content": {
                                    "application/json": {
                                        "schema": {