part3Data := dummyData[2*partSize:]

	// Calculate CRC32C checksum for each part using NewChecksumFromData
	checksumType := ChecksumCRC32C

	part1Checksum := NewChecksumFromData(checksumType, part1Data)
	part2Checksum := NewChecksumFromData(checksumType, part2Data)
	part3Checksum := NewChecksumFromData(checksumType, part3Data)

	// Combine the raw checksums (this is what happens in CompleteMultipartUpload)

	}
	return nil
}

// Trailing return whether the checksum is trailing.
func (c ChecksumType) Trailing() bool {
	return c.Is(ChecksumTrailing)
}

// NewChecksumFromData returns a new Checksum, using specified algorithm type on data.
func NewChecksumFromData(t ChecksumType, data []byte) *Checksum {
	if !t.IsSet() {
		return nil
	}
	h := t.Hasher()
	h.Write(data)
	raw := h.Sum(nil)

	}

	if checksumType.IsSet() {
		checksumType |= hash.ChecksumMultipart | hash.ChecksumIncludesMultipart
		checksum.Type = checksumType
		if !checksumType.FullObjectRequested() {
			checksum = *hash.NewChecksumFromData(checksumType, checksumCombined)
		}
		fi.Checksum = checksum.AppendTo(nil, checksumCombined)
		if opts.EncryptFn != nil {
			fi.Checksum = opts.EncryptFn("object-checksum", fi.Checksum)
		}
	}