Und wenn Sie alle verfügbaren Schemas (JSON-Schemas) in OpenAPI überprüfen, werden Sie feststellen, dass es zwei gibt, ein `Item-Input` und ein `Item-Output`.

Für `Item-Input` ist `description` **nicht erforderlich**, es hat kein rotes Sternchen.

Aber für `Item-Output` ist `description` **erforderlich**, es hat ein rotes Sternchen.

<div class="screenshot">

### Модели для входа и выхода в документации { #model-for-input-and-output-in-docs }

Если посмотреть все доступные схемы (JSON Schema) в OpenAPI, вы увидите две: `Item-Input` и `Item-Output`.

Для `Item-Input` поле `description` **не является обязательным** — красной звёздочки нет.

А для `Item-Output` `description` **обязательно** — красная звёздочка есть.

<div class="screenshot">
<img src="/img/tutorial/separate-openapi-schemas/image04.png">

from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: str
    description: str | None = None
    price: float
    tax: float = 10.5
    tags: list[str] = []


items = {
    "foo": {"name": "Foo", "price": 50.2},
    "bar": {"name": "Bar", "description": "The bartenders", "price": 62, "tax": 20.2},

            return;
        }
        final OpenSearchUrlQueue urlQueue = new OpenSearchUrlQueue();
        urlQueue.setSessionId(sessionId);
        urlQueue.setUrl(url);
        urlQueue.setCreateTime(System.currentTimeMillis());
        urlQueue.setLastModified(0L);
        urlQueue.setDepth(0);
        urlQueue.setMethod(Constants.GET_METHOD);
        insert(urlQueue);
    }

    /**

     *
     * @return the Java version number, defaults to 8 if version cannot be determined
     */
    public static int getJavaVersion() {
        final String javaVersion = System.getProperty("java.version");
        int version = 8;
        if (javaVersion != null) {
            final String[] split = javaVersion.split("[\\._]");
            if (split.length > 0) {

    /**
     * Creates KerberosCredentials using the default JAAS configuration.
     *
     * @throws LoginException if authentication fails
     */
    public KerberosCredentials() throws LoginException {
        this(System.getProperty("jaaslounge.sso.jaas.config"));
    }

    /**
     * Creates KerberosCredentials using the specified JAAS login context.
     *
     * @param loginContextName the name of the JAAS login context

     */
    public String getPrivateKey() {
        return privateKey;
    }

    /**
     * Set the absolute path to private key file.
     *
     * @param privateKey path to private key in local file system
     */
    public void setPrivateKey(final String privateKey) {
        this.privateKey = privateKey;
    }

 * under the License.
 */
package org.apache.maven.model.building;

import java.net.URI;

/**
 * Provides access to the contents of a POM independently of the backing store (e.g. file system, database, memory).
 * <p>
 * Unlike {@link ModelSource}, this interface supports loading of parent POM(s) from the same backing store and allows

# NOTE: Cannot invoke go command after this point.
# We're about to delete all but the cross-compiled binaries.
cd ..
if [ "$goos" = "$gohostos" -a "$goarch" = "$gohostarch" ]; then
	# cross-compile for local system. nothing to copy.
	# useful if you've bootstrapped yourself but want to
	# prepare a clean toolchain for others.
	true
else
	rm -f bin/go_${goos}_${goarch}_exec
	mv bin/*_*/* bin
	rmdir bin/*_*

        readings[0] = new String[] { "filtered" };
        SuggestItem item = new SuggestItem(new String[] { "filtered" }, readings, new String[] { "content" }, 1, 0, -1,
                new String[] { "tag1" }, new String[] { SuggestConstants.DEFAULT_ROLE }, null, SuggestItem.Kind.DOCUMENT);

        SuggestIndexResponse response = suggester.indexer().index(item);

        assertNotNull(response);