* @param field The field name.
     * @param lang The language.
     * @return The normalize analyzer name.
     */
    public String getNormalizeAnalyzerName(final String field, final String lang) {
        return getAnalyzerName(field, lang, m -> m.normalizeAnalyzer, NORMALIZE_ANALYZER);
    }

    /**
     * Returns the name of the contents analyzer for a given field and language.
     * @param field The field name.

    }

    // Test annotation on field with WEB protocol
    @Test
    public void test_annotationOnFieldWithWebProtocol() throws Exception {
        final Field field = UriTypeTest.class.getDeclaredField("testFieldWeb");
        final UriType annotation = field.getAnnotation(UriType.class);

        assertNotNull(annotation, "Annotation should be present on field");

                for (CacheField field : fields) {
                    field.interpolate(target, interpolateObjectAction);
                }
            }

            boolean isArray() {
                return isArray;
            }
        }

        abstract static class CacheField {
            final Field field;

            CacheField(Field field) {
                this.field = field;

    }

    // Test annotation on field
    @Test
    public void test_annotationOnField() throws Exception {
        final Field field = CustomSizeTest.class.getDeclaredField("testField");
        final CustomSize annotation = field.getAnnotation(CustomSize.class);

        assertNotNull(annotation, "Annotation should be present on field");

    }

    /**
     * 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) {

func (z *allTierStats) DecodeMsg(dc *msgp.Reader) (err error) {
	var field []byte
	_ = field
	var zb0001 uint32
	zb0001, err = dc.ReadMapHeader()
	if err != nil {
		err = msgp.WrapError(err)
		return
	}
	for zb0001 > 0 {
		zb0001--
		field, err = dc.ReadMapKeyPtr()
		if err != nil {
			err = msgp.WrapError(err)
			return
		}
		switch msgp.UnsafeString(field) {
		case "ts":
			var zb0002 uint32

## Import `Field` { #import-field }

First, you have to import it:

{* ../../docs_src/body_fields/tutorial001_an_py310.py hl[4] *}


/// warning

Notice that `Field` is imported directly from `pydantic`, not from `fastapi` as are all the rest (`Query`, `Path`, `Body`, etc).

///

func (z *testRequest) DecodeMsg(dc *msgp.Reader) (err error) {
	var field []byte
	_ = field
	var zb0001 uint32
	zb0001, err = dc.ReadMapHeader()
	if err != nil {
		err = msgp.WrapError(err)
		return
	}
	for zb0001 > 0 {
		zb0001--
		field, err = dc.ReadMapKeyPtr()
		if err != nil {
			err = msgp.WrapError(err)
			return
		}
		switch msgp.UnsafeString(field) {
		case "Num":
			z.Num, err = dc.ReadInt()

          <required>true</required>
          <type>String</type>
        </field>
        <field>
          <name>version</name>
          <description>The version of the extension.</description>
          <version>1.0.0+</version>
          <required>true</required>
          <type>String</type>
        </field>
        <field>
          <name>classLoadingStrategy</name>

与在*路径操作函数*中使用 `Query`、`Path` 、`Body` 声明校验与元数据的方式一样，可以使用 Pydantic 的 `Field` 在 Pydantic 模型内部声明校验和元数据。

## 导入 `Field` { #import-field }

首先，从 Pydantic 中导入 `Field`：

{* ../../docs_src/body_fields/tutorial001_an_py310.py hl[4] *}

/// warning | 警告

注意，与从 `fastapi` 导入 `Query`，`Path`、`Body` 不同，要直接从 `pydantic` 导入 `Field` 。

///

## 声明模型属性 { #declare-model-attributes }

然后，使用 `Field` 定义模型的属性：