The way to describe this in OpenAPI, is to mark that field as **required**, because it will always be there.

Because of that, the JSON Schema for a model can be different depending on if it's used for **input or output**:

* for **input** the `description` will **not be required**
* for **output** it will be **required** (and possibly `None`, or in JSON terms, `null`)

    public CreateForm() {
    }

    /** The dictionary ID to which this synonym entry belongs */
    @Required
    public String dictId;

    /** The CRUD operation mode for form processing */
    @ValidateTypeFailure
    public Integer crudMode;

    /** The input terms that should be considered synonymous */
    @Required
    @Size(max = 1000)
    public String inputs;

    assert response.status_code == 422, response.text
    assert response.json() == {
        "detail": [
            {
                "input": None,
                "loc": ["body"],
                "msg": "Field required",
                "type": "missing",
            },
        ],
    }


@pytest.mark.parametrize(
    "path",
    ["/optional-str", "/model-optional-str"],
)

 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

    /**
     * The name of the request header.
     */
    @Required
    @Size(max = 100)
    public String name;

    /**
     * The value of the request header.
     */
    @Required
    @Size(max = 1000)
    public String value;

    /**
     * The web configuration ID associated with this request header.
     */
    @Required
    @Size(max = 1000)
    public String webConfigId;

    /**

 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,

                    "parameters": [
                        {
                            "description": "Query string for the items to search in the database that have a good match",
                            "required": False,
                            "schema": {
                                "anyOf": [
                                    {
                                        "type": "string",

                        "parameters": [
                            {
                                "name": "id",
                                "in": "query",
                                "required": False,
                                "schema": {
                                    "anyOf": [{"type": "string"}, {"type": "null"}],
                                    "title": "Id",
                                },

    }
    expectUnchanged();
  }

  @MapFeature.Require(absent = SUPPORTS_PUT)
  @CollectionSize.Require(absent = ZERO)
  public void testReplaceEntry_unsupportedPresent() {
    assertThrows(UnsupportedOperationException.class, () -> getMap().replace(k0(), v0(), v3()));
    expectUnchanged();
  }

  @MapFeature.Require(absent = SUPPORTS_PUT)

    validations:
      required: true

  - type: textarea
    attributes:
      label: 2. What's the best code you can write to accomplish that without the new feature?
    validations:
      required: true

  - type: textarea
    attributes:
      label: 3. What would that same code look like if we added your feature?
    validations:
      required: true

  - type: markdown
    attributes: