assertDoesNotThrow(() -> request.setFileId(longFileId), "Should handle 32-byte file ID");
    }

    @Test
    @DisplayName("Should test mock implementation of interface")
    void testMockImplementation() {
        // Given
        RequestWithFileId mockRequest = mock(RequestWithFileId.class);

        // When
        mockRequest.setFileId(testFileId);

        // Then

            assertTrue(encryption instanceof NegotiateContextRequest);
        }

        @Test
        @DisplayName("Should verify mock implementation")
        void testMockImplementation() {
            NegotiateContextRequest mockRequest = mock(NegotiateContextRequest.class);
            when(mockRequest.getContextType()).thenReturn(0xFF);