if (value != null && filePathMap.containsKey(value)) {
            return filePathMap.get(value);
        }
        return value;
    }

    /**
     * Updates the thumbnail field in the search index.
     * @param thumbnailId The thumbnail ID.
     * @param value The thumbnail value to update.
     */
    protected void updateThumbnailField(final String thumbnailId, final String value) {

     * The media-type multipart/form-data follows the rules of all multipart MIME data streams as
     * outlined in RFC 2046. In forms, there are a series of fields to be supplied by the user who
     * fills out the form. Each field has a name. Within a given form, the names are unique.
     */
    @JvmField
    val FORM = "multipart/form-data".toMediaType()

    private val COLONSPACE = byteArrayOf(':'.code.toByte(), ' '.code.toByte())

            addFieldToSource(sourceMap, "virtualHost", virtualHost);
        }
        return sourceMap;
    }

    protected void addFieldToSource(Map<String, Object> sourceMap, String field, Object value) {
        sourceMap.put(field, value);
    }

    // ===================================================================================
    //                                                                      Basic Override

- Add logging with contextual information

### Resource Files

- `src/main/resources/suggest_indices/suggest.json` - Index settings
- `src/main/resources/suggest_indices/suggest/mappings-default.json` - Field mappings
- `src/main/resources/suggest_settings/` - Default configurations

---

## Testing

### Test Framework

JUnit 4 with opensearch-runner (embedded instance)

### Standard Test Setup

{* ../../docs_src/header_param_models/tutorial001_an_py310.py hl[9:14,18] *}

**FastAPI** will **extract** the data for **each field** from the **headers** in the request and give you the Pydantic model you defined.

## Check the Docs { #check-the-docs }

You can see the required headers in the docs UI at `/docs`:

<div class="screenshot">

    assert response.json() == snapshot(
        {
            "detail": [
                {
                    "type": "missing",
                    "loc": ["header", "save_data"],
                    "msg": "Field required",
                    "input": {"x_tag": [], "host": "testserver"},
                }
            ]
        }
    )


def test_header_param_model_extra(client: TestClient):
    response = client.get(

 
## Changes by Kind

### Deprecation

- Added a new `FileKeyRef` field to containers, allowing them to load variables from files by setting this field.
  

  }

  private static final class AvlNode<E extends @Nullable Object> {
    /*
     * For "normal" nodes, the type of this field is `E`, not `@Nullable E` (though note that E is a
     * type that can include null, as in a TreeMultiset<@Nullable String>).
     *
     * For the header node, though, this field contains `null`, regardless of the type of the
     * multiset.
     *

    // - Class/Member Variables -/
    // --------------------------/

    /**
     * Configuration to pass to the goals.
     */
    private Object configuration;

    /**
     * Field goals.
     */
    private java.util.List<String> goals;

    // -----------/
    // - Methods -/
    // -----------/

    /**
     * Method addGoal.
     *
     * @param string a string object.