builder.setFetchSource(fields, null);
            queryHelper.processSearchPreference(builder, userBean, String.join(StringUtil.EMPTY, docIds));
            return true;
        });
    }

    /**
     * Updates a single field of a document.
     *
     * @param id The document ID to update
     * @param field The field name to update
     * @param value The new value for the field

  // Secret sauce for setting final fields; don't make it public.
  static final class FieldSetter<T> {
    private final Field field;

    private FieldSetter(Field field) {
      this.field = field;
      field.setAccessible(true);
    }

    void set(T instance, Object value) {
      try {
        field.set(instance, value);
      } catch (IllegalAccessException impossible) {
        throw new AssertionError(impossible);

	// ErrModelValueRequired model value required
	ErrModelValueRequired = errors.New("model value required")
	// ErrModelAccessibleFieldsRequired model accessible fields required
	ErrModelAccessibleFieldsRequired = errors.New("model accessible fields required")
	// ErrSubQueryRequired sub query required
	ErrSubQueryRequired = errors.New("sub query required")
	// ErrInvalidData unsupported data

        try {
            java.lang.reflect.Field ptypeField = jcifs.dcerpc.DcerpcMessage.class.getDeclaredField("ptype");
            ptypeField.setAccessible(true);
            assertEquals(0, ptypeField.get(msrpcSamrOpenAlias), "ptype should be initialized to 0");

            java.lang.reflect.Field flagsField = jcifs.dcerpc.DcerpcMessage.class.getDeclaredField("flags");

    }

    /**
     * Adds a field and text pair to the field log for tracking query terms.
     * @param field The field name.
     * @param text The query text for this field.
     */
    public void addFieldLog(final String field, final String text) {
        if (fieldLogMap == null) {
            return;
        }

        List<String> list = fieldLogMap.get(field);
        if (list == null) {

        facetQueryView.addQuery("label1", "field1:value1");
        facetQueryView.addQuery("label2", "field2:value2");

        facetQueryView.init();

        // Should not modify query map when no filetype queries present
        assertEquals(2, facetQueryView.getQueryMap().size());
        assertEquals("field1:value1", facetQueryView.getQueryMap().get("label1"));

     * Specifies the language preference if redirection fails.
     */
    public String lang;

    /**
     * Additional fields map for error page fallback.
     * Contains extra search parameters as key-value pairs if redirection fails.
     */
    public Map<String, String[]> fields = new HashMap<>();

    /** The set of field names for content. */
    protected final Set<String> contentFieldNameSet = new HashSet<>();

    /** The set of field names for tags. */
    protected final Set<String> tagFieldNameSet = new HashSet<>();

    /** The set of field names for roles. */
    protected final Set<String> roleFieldNameSet = new HashSet<>();

    /** The list of content field names. */

### 🖼 🩺 🎚

⏮️ `examples` 🚮 `Body()` `/docs` 🔜 👀 💖:

<img src="/img/tutorial/body-fields/image02.png">

## 📡 ℹ

/// warning

👉 📶 📡 ℹ 🔃 🐩 **🎻 🔗** &amp; **🗄**.

🚥 💭 🔛 ⏪ 👷 👆, 👈 💪 🥃, &amp; 👆 🎲 🚫 💪 👉 ℹ, 💭 🆓 🚶 👫.

///

🕐❔ 👆 🚮 🖼 🔘 Pydantic 🏷, ⚙️ `schema_extra` ⚖️ `Field(example="something")` 👈 🖼 🚮 **🎻 🔗** 👈 Pydantic 🏷.

     * Returns the field.
     *
     * @return the field
     */
    Field getField();

    /**
     * Returns the field name.
     *
     * @return the field name
     */
    String getFieldName();

    /**
     * Returns the type of the field.
     *
     * @param <T>
     *            the type of the field
     * @return the type of the field
     */
    <T> Class<T> getFieldType();

    /**