// Then
        assertEquals(largeSize, result);
        verify(request, times(1)).size();
    }

    @Test
    @DisplayName("Test createCancel returns cancel request")
    void testCreateCancelReturnsRequest() {
        // Given
        when(request.createCancel()).thenReturn(cancelRequest);

        // When
        CommonServerMessageBlockRequest result = request.createCancel();

        // Then