```JSON
{
  "title": "towel",
  "size": "XL"
}
```

Aldığınız body’yi de içeren, verinin geçersiz olduğunu söyleyen bir response alırsınız:

```JSON hl_lines="12-15"
{
  "detail": [
    {
      "loc": [
        "body",
        "size"
      ],
      "msg": "value is not a valid integer",
      "type": "type_error.integer"
    }
  ],
  "body": {

现在试着发送一个无效的 `item`，例如：

```JSON
{
  "title": "towel",
  "size": "XL"
}
```

收到的响应会告诉你数据无效，并包含收到的请求体：

```JSON hl_lines="12-15"
{
  "detail": [
    {
      "loc": [
        "body",
        "size"
      ],
      "msg": "value is not a valid integer",
      "type": "type_error.integer"
    }
  ],
  "body": {

```JSON
{
  "title": "towel",
  "size": "XL"
}
```

You will receive a response telling you that the data is invalid containing the received body:

```JSON hl_lines="12-15"
{
  "detail": [
    {
      "loc": [
        "body",
        "size"
      ],
      "msg": "value is not a valid integer",
      "type": "type_error.integer"
    }
  ],
  "body": {

이제 다음처럼 유효하지 않은 item을 보내보세요:

```JSON
{
  "title": "towel",
  "size": "XL"
}
```

받은 body를 포함해 데이터가 유효하지 않다고 알려주는 응답을 받게 됩니다:

```JSON hl_lines="12-15"
{
  "detail": [
    {
      "loc": [
        "body",
        "size"
      ],
      "msg": "value is not a valid integer",
      "type": "type_error.integer"
    }
  ],
  "body": {

	_ = x[ErrSiteReplicationPeerResp-211]
	_ = x[ErrSiteReplicationBackendIssue-212]
	_ = x[ErrSiteReplicationServiceAccountError-213]
	_ = x[ErrSiteReplicationBucketConfigError-214]
	_ = x[ErrSiteReplicationBucketMetaError-215]
	_ = x[ErrSiteReplicationIAMError-216]
	_ = x[ErrSiteReplicationConfigMissing-217]
	_ = x[ErrSiteReplicationIAMConfigMismatch-218]
	_ = x[ErrAdminRebalanceAlreadyStarted-219]
	_ = x[ErrAdminRebalanceNotStarted-220]

└── src/test/java/      # Comprehensive test suite
```

## 📊 Performance Metrics

CoreLib 0.7.0 includes significant performance improvements through Java 21 optimizations:

- **5-15% faster** type conversions with pattern matching and switch expressions
- **Reduced memory allocation** in collection operations and bean copying
- **Improved reflection performance** with cached descriptors and optimized field access

現在嘗試送出一個無效的項目，例如：

```JSON
{
  "title": "towel",
  "size": "XL"
}
```

你會收到一個告知資料無效、且包含所收到 body 的回應：

```JSON hl_lines="12-15"
{
  "detail": [
    {
      "loc": [
        "body",
        "size"
      ],
      "msg": "value is not a valid integer",
      "type": "type_error.integer"
    }
  ],
  "body": {

	VPSHRDW $82, Z8, Z22, K4, Z12                      // 6253cd4472e052
	VPSHRDW $82, 15(R8), Z22, K4, Z12                  // 6253cd4472a00f00000052
	VPSHRDW $82, (BP), Z22, K4, Z12                    // 6273cd4472650052
	VPSHRDW $82, Z6, Z11, K4, Z12                      // 6273a54c72e652
	VPSHRDW $82, Z8, Z11, K4, Z12                      // 6253a54c72e052
	VPSHRDW $82, 15(R8), Z11, K4, Z12                  // 6253a54c72a00f00000052

ここで、以下のような無効な項目を送信してみてください:

```JSON
{
  "title": "towel",
  "size": "XL"
}
```

受信したボディを含むデータが無効であることを示すレスポンスが表示されます:

```JSON hl_lines="12-15"
{
  "detail": [
    {
      "loc": [
        "body",
        "size"
      ],
      "msg": "value is not a valid integer",
      "type": "type_error.integer"
    }
  ],
  "body": {

  // Max size is halved due to indexing into double-sized alternatingKeysAndValues
  private static final int BYTE_MAX_SIZE = 1 << (Byte.SIZE - 1); // 2^7 = 128
  private static final int SHORT_MAX_SIZE = 1 << (Short.SIZE - 1); // 2^15 = 32_768

  private static final int BYTE_MASK = (1 << Byte.SIZE) - 1; // 2^8 - 1 = 255
  private static final int SHORT_MASK = (1 << Short.SIZE) - 1; // 2^16 - 1 = 65_535

  @SuppressWarnings("unchecked")