class MiniDynamicBuffer {
 public:
  explicit MiniDynamicBuffer(size_t max_length = kDefaultMaxLength)
      : offset_({0}), max_length_(max_length) {}

  // Add string to dynamic buffer by resizing the buffer and copying the data.
  absl::Status AddString(const char* str, size_t len);

  // Fill content into a buffer and returns the number of bytes stored.
  // The function allocates space for the buffer but does NOT take ownership.

// consume tunnel information.
message ApplicationTunnel {
  enum Protocol {
    // Bytes are copied from the inner stream without modification.
    NONE = 0;

    // Prepend PROXY protocol headers before copying bytes
    // Standard PROXY source and destination information
    // is included, along with potential extra TLV headers:
    // 0xD0 - The SPIFFE identity of the source workload

		}
	}

	if len(fanOutEntries) > 0 {
		// Fan-out requires no copying, and must be carried from original source
		// https://en.wikipedia.org/wiki/Copy_protection so the incoming stream
		// is always going to be in-memory as we cannot re-read from what we
		// wrote to disk - since that amounts to "copying" from a "copy"
		// instead of "copying" from source, we need the stream to be seekable

                                  uint64 size) override {
    // TODO(annarev): figure out if we should support memzero/memset
    // functionality by allocating on host and then copying to device.
    return tsl::errors::Unimplemented(
        "SynchronousMemZero is not supported by pluggable device.");
  }
  absl::Status SynchronousMemcpy(DeviceMemoryBase* gpu_dst,

				select {
				case <-ctx.Done():
					return
				default:
				}

				stopFn := globalBatchJobsMetrics.trace(batchJobMetricExpire, ri.JobID, attempts)
				// Copying toDel to select from objects whose
				// deletion failed
				copy(toDelCopy, toDel)
				var failed int
				errs := r.Expire(ctx, api, vc, toDel)
				// reslice toDel in preparation for next retry attempt

		// serializations after dispatching this event.
		//
		// Given that CachingObject is just wrapping the object and not perfoming
		// deep-copying (until some field is explicitly being modified), we create
		// it unconditionally to ensure safety and reduce deep-copying.
		//
		// Make a shallow copy to allow overwriting Object and PrevObject.
		wcEvent := *event
		setCachingObjects(&wcEvent, c.versioner)

	}
	encodedSuccessResponse := encodeResponse(response)

	// Write success response.
	writeSuccessResponseXML(w, encodedSuccessResponse)
}

// CopyObjectPartHandler - uploads a part by copying data from an existing object as data source.
func (api objectAPIHandlers) CopyObjectPartHandler(w http.ResponseWriter, r *http.Request) {
	ctx := newContext(r, w, "CopyObjectPart")

	// Make a copy of the supplied metadata to avoid
	// to change the original one.
	defaultMeta := make(map[string]string, len(userMeta))
	for k, v := range userMeta {
		// skip tier metadata when copying metadata from source object
		switch k {
		case metaTierName, metaTierStatus, metaTierObjName, metaTierVersionID:
			continue
		}
		defaultMeta[k] = v
	}

	// remove SSE Headers from source info

--------------------------------------------------
For the aclocal/ax_boost_base.m4 and contrib/fb303/aclocal/ax_boost_base.m4 components:

#   Copyright (c) 2007 Thomas Porschberg <******@****.***>
#
#   Copying and distribution of this file, with or without
#   modification, are permitted in any medium without royalty provided
#   the copyright notice and this notice are preserved.

				ReplicationRequest:      true, // always set this to distinguish between `mc mirror` replication and serverside
			},
		})
	}

	if retry && !s3Type { // when we are retrying avoid copying if necessary.
		gopts := miniogo.GetObjectOptions{}
		if err := gopts.SetMatchETag(srcObjInfo.ETag); err != nil {
			return err
		}