// WEB-INF/classes
        buf.append("WEB-INF");
        buf.append(File.separator);
        buf.append("classes");
        // target/classes
        final String userDir = System.getProperty("user.dir");
        final File targetDir = new File(userDir, "target");
        final File targetClassesDir = new File(targetDir, "classes");
        if (targetClassesDir.isDirectory()) {
            buf.append(cpSeparator);

`BaseUser` tiene los campos base. Luego `UserIn` hereda de `BaseUser` y añade el campo `password`, por lo que incluirá todos los campos de ambos modelos.

Anotamos el tipo de retorno de la función como `BaseUser`, pero en realidad estamos devolviendo un instance de `UserIn`.

		"SourceIp":         {handlers.GetSourceIPRaw(r)},
		"UserAgent":        {r.UserAgent()},
		"Referer":          {r.Referer()},
		"principaltype":    {principalType},
		"userid":           {username},
		"username":         {username},
		"versionid":        {vid},
		"signatureversion": {signatureVersion},
		"authType":         {authtype},
	}

	if lc != "" {

     */
    public static final String JAVA_IO_TMPDIR = System.getProperty("java.io.tmpdir");

    /**
     * <code>user.dir</code> system property.
     */
    public static final String USER_DIR = System.getProperty("user.dir");

    /**
     * <code>user.home</code> system property.
     */
    public static final String USER_HOME = System.getProperty("user.home");

    /**

	Allergen         NullString
	Password         EncryptedData
	Bytes            []byte
	Num              Num
	Strings          StringsSlice
	Structs          StructsSlice
	Role             Role
	UserID           *sql.NullInt64
	User             User
	EmptyTime        EmptyTime
	ExampleStruct    ExampleStruct
	ExampleStructPtr *ExampleStruct
}

type EncryptedData []byte

  LINE_SEPARATOR("line.separator"),

  /** User's account name. */
  USER_NAME("user.name"),

  /** User's home directory. */
  USER_HOME("user.home"),

  /** User's current working directory. */
  USER_DIR("user.dir");

  private final String key;

  StandardSystemProperty(String key) {
    this.key = key;
  }

  /** Returns the key used to look up this system property. */
  public String key() {

	erasureSetWriteTolerance     = "write_tolerance"
	erasureSetReadHealth         = "read_health"
	erasureSetWriteHealth        = "write_health"
)

const (
	poolIDL = "pool_id"
	setIDL  = "set_id"
)

var (
	erasureSetOverallWriteQuorumMD = NewGaugeMD(erasureSetOverallWriteQuorum,
		"Overall write quorum across pools and sets")
	erasureSetOverallHealthMD = NewGaugeMD(erasureSetOverallHealth,

        // WEB-INF/classes
        buf.append("WEB-INF");
        buf.append(File.separator);
        buf.append("classes");
        // target/classes
        final String userDir = System.getProperty("user.dir");
        final File targetDir = new File(userDir, "target");
        final File targetClassesDir = new File(targetDir, "classes");
        if (targetClassesDir.isDirectory()) {
            buf.append(cpSeparator);

/// note | 기술 세부사항

응답 모델은 함수의 타입 어노테이션 대신 이 매개변수로 선언하는데, 경로 함수가 실제 응답 모델을 반환하지 않고 `dict`, 데이터베이스 객체나 기타 다른 모델을 `response_model`을 사용하여 필드 제한과 직렬화를 수행하고 반환할 수 있기 때문입니다

///

## 동일한 입력 데이터 반환

여기서 우리는 평문 비밀번호를 포함하는 `UserIn` 모델을 선언합니다:

{* ../../docs_src/response_model/tutorial002.py hl[9,11] *}

그리고 이 모델을 사용하여 입력을 선언하고 같은 모델로 출력을 선언합니다:

{* ../../docs_src/response_model/tutorial002.py hl[17:18] *}

* Allow path parameters to have default values (e.g. `None`) and discard them instead of raising an error.
    * This allows declaring a parameter like `user_id: str = None` that can be taken from a query parameter, but the same *path operation* can be included in a router with a path `/users/{user_id}`, in which case will be taken from the path and will be required.