private final byte[] sourceKey;
    private final SrvCopychunk[] chunks;

    /**
     * Constructs a server copy chunk operation request
     * @param sourceKey the resume key identifying the source file
     * @param chunks the array of copy chunk descriptors
     */
    public SrvCopychunkCopy(final byte[] sourceKey, final SrvCopychunk... chunks) {
        this.sourceKey = sourceKey;
        this.chunks = chunks;

        void testConstructorWithSingleChunk() {
            // Given
            byte[] sourceKey = new byte[SOURCE_KEY_SIZE];
            Arrays.fill(sourceKey, (byte) 0xAB);
            SrvCopychunk chunk = new SrvCopychunk(100, 200, 300);

            // When
            SrvCopychunkCopy copy = new SrvCopychunkCopy(sourceKey, chunk);

            // Then
            assertNotNull(copy);
        }

        @Test