t.Errorf("Read error: got %T, want testError1", err)
	}
	if _, err := rb.TryRead([]byte{0}); err != (testError1{}) {
		t.Errorf("Read error: got %T, want testError1", err)
	}
	rb.CloseWithError(testError2{})
	if _, err := rb.Read(nil); err != (testError1{}) {
		t.Errorf("Read error: got %T, want testError1", err)
	}
	if _, err := rb.Read([]byte{0}); err != (testError1{}) {

    dependencies=[Security(oauth2_scheme, scopes=["read", "write"])],
)
async def read_with_oauth2_scheme():
    return {"message": "Admin Access"}


@app.get(
    "/with-get-token", dependencies=[Security(get_token, scopes=["read", "write"])]
)
async def read_with_get_token():
    return {"message": "Admin Access"}


router = APIRouter(dependencies=[Security(oauth2_scheme, scopes=["read"])])


@router.get("/items/")

                                ## Items

                                You can **read items**.

                                ## Users

                                You will be able to:

                                * **Create users** (_not implemented_).
                                * **Read users** (_not implemented_).

                                """
                )

}

var errUnreadByte = errors.New("bytes.Buffer: UnreadByte: previous operation was not a successful read")

// UnreadByte unreads the last byte returned by the most recent successful
// read operation that read at least one byte. If a write has happened since
// the last read, if the last read returned an error, or if the read read zero
// bytes, UnreadByte returns an error.
func (b *Buffer) UnreadByte() error {

/**
 * Generic interface to read/write objects to/from XML.
 *
 * @param <T> the object type to read/write
 * @since 4.0.0
 */
@Experimental
public interface XmlFactory<T> extends Service {

    @Nonnull
    default T read(@Nonnull Path path) throws XmlReaderException {
        return read(path, true);
    }

    @Nonnull
    default T read(@Nonnull Path path, boolean strict) throws XmlReaderException {

    tokenUrl="/api/oauth/token",
    scopes={"read": "Read access", "write": "Write access"},
)


async def get_token(token: Annotated[str, Depends(oauth2_scheme)]) -> str:
    return token


app = FastAPI(dependencies=[Depends(get_token)])


@app.get("/admin", dependencies=[Security(get_token, scopes=["read", "write"])])
async def read_admin():
    return {"message": "Admin Access"}

To ensure that you don't return more data than you should, read the docs for [Tutorial - Response Model - Return Type](../tutorial/response-model.md){.internal-link target=_blank}.

## Documentation Tags - OpenAPI { #documentation-tags-openapi }

	buf := make([]byte, 512)

	for b.Loop() {
		rb.Write(data)
		rb.Read(buf)
	}
}

func BenchmarkRingBuffer_AsyncRead(b *testing.B) {
	// Pretty useless benchmark, but it's here for completeness.
	rb := New(1024)
	data := []byte(strings.Repeat("a", 512))
	buf := make([]byte, 512)

	go func() {
		for {
			rb.Read(buf)
		}
	}()

	for b.Loop() {
		rb.Write(data)
	}
}

	if err != nil {
		t.Fatal(err)
	}
	existingETag := objInfo.ETag

	// Simulate read quorum failure by taking enough disks offline
	// With 16 disks (EC 8+8), read quorum is 9. Taking 8 disks offline leaves only 8,
	// which is below read quorum.
	erasureDisks := xl.getDisks()
	z.serverPools[0].erasureDisksMu.Lock()
	xl.getDisks = func() []StorageAPI {

		if !isErrReadQuorum(err) {
			t.Errorf("Expected read quorum error when if-match is used with quorum failure, got: %v", err)
		}
	})

	t.Run("if-match wrong etag with read quorum failure", func(t *testing.T) {
		// Test Case 3: if-match with wrong ETag
		// Even if the ETag doesn't match, we should still get read quorum error
		// because we can't read the object to check the condition.
		opts := ObjectOptions{