///

```Python hl_lines="2  5-8  11"
{!> ../../docs_src/settings/tutorial001_pv1.py!}
```

////

/// tip

If you want something quick to copy and paste, don't use this example, use the last one below.

///

                            " but readBytesWireFormat returned " + n );
                }
            }
            // Don't think we can rely on n being correct here. Must use byteCount.
            // Last paragraph of section 3.13.3 eludes to this.

            bufferIndex += byteCount;
        }

        length = bufferIndex - start;
        return length;
    }

	case closed:
		// client closed, this is usually a manual process
		// so return a local error as client is closed
		return nil, &NetworkError{Err: ErrClientClosed}
	case offline:
		// client offline, return last error captured.
		return nil, &NetworkError{Err: c.LastError()}
	}

	// client is still connected, attempt the request.

	// Shallow copy. We don't modify the *UserInfo, if set.
	// All other fields are copied.

	if result {
		atomic.AddInt64(&writer.bytesReturned, int64(writer.payloadBufferIndex))
		writer.payloadBufferIndex = 0
	}
	return result
}

// Finish is the last call to the message writer - it sends any
// remaining record payload, then sends statistics and finally the end
// message.
func (writer *messageWriter) Finish(bytesScanned, bytesProcessed int64) error {
	select {

	}
	for k, v := range d.Cache {
		clone.Cache[k] = v.clone()
	}
	return clone
}

// merge root of other into d.
// children of root will be flattened before being merged.
// Last update time will be set to the last updated.
func (d *dataUsageCache) merge(other dataUsageCache) {
	existingRoot := d.root()
	otherRoot := other.root()
	if existingRoot == nil && otherRoot == nil {
		return
	}

RegExp("^\\.("+t+")"),TAG:new RegExp("^("+t+"|[*])"),ATTR:new RegExp("^"+p),PSEUDO:new RegExp("^"+g),CHILD:new RegExp("^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\("+ge+"*(even|odd|(([+-]|)(\\d*)n|)"+ge+"*(?:([+-]|)"+ge+"*(\\d+)|))"+ge+"*\\)|)","i"),bool:new RegExp("^(?:"+f+")$","i"),needsContext:new RegExp("^"+ge+"*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\("+ge+"*((?:-\\d)?\\d*)"+ge+"*\\)|)(?=[^-]|$)","i")},N=/^(?:input|select|textarea|button)$/i,q=/^h\d$/i,L=/^(?:#([\w-]+)|(\w+)|...

## Overview

Replication relies on immutability provided by versioning to sync objects between the configured source and replication target. Replication results in the object data, metadata, last modification time and version ID all being identical between the source and target. Thus version ordering is automatically guaranteed on the source and target clusters.

### Replication of object version and metadata

	}
}

// Test that an EOF is overridden by a user-generated scan error.
func TestErrAtEOF(t *testing.T) {
	s := NewScanner(strings.NewReader("1 2 33"))
	// This splitter will fail on last entry, after s.err==EOF.
	split := func(data []byte, atEOF bool) (advance int, token []byte, err error) {
		advance, token, err = ScanWords(data, atEOF)
		if len(token) > 1 {
			if s.ErrOrEOF() != io.EOF {

			// Even if there is nothing in the queue.
			if h.batchSize > 1 && time.Since(lastBatchProcess) < time.Second {
				continue
			}
		}

		// if we have reached the count send at once
		// or we have crossed last second before batch was sent, send at once
		lastBatchProcess = time.Now()

		var retries int
		retryIntvl := h.config.RetryIntvl
		if retryIntvl <= 0 {
			retryIntvl = 3 * time.Second
		}

        def blocksTable = withCategories { blocksSection ? blocksSection.table[0] : parse('<table/>') }
        _ * classDoc.simpleName >> name.split('\\.').last()
        _ * classDoc.name >> name
        _ * classDoc.id >> (args.id ?: name)
        _ * classDoc.classSection >> content
        _ * classDoc.propertiesSection >> propertiesSection