// Test VecSwapItems function
    bool test_vec_swap_items(void) {
    WriteFmt("Testing VecSwapItems\n");
    
    // Create a vector of integers

    
    // Swap first and last elements
    VecSwapItems(&vec, 0, 4);
    
    // Check that the elements were swapped

    
    // Swap two elements in the middle
    VecSwapItems(&vec, 1, 3);
    
    // Check that the elements were swapped

    /// FAILURE : Does not return
    ///
    #define StrSwapCharAt(str, idx1, idx2) VecSwapItems((str), (idx1), (idx2))
    
    ///

    uint64_t len = VecLen(vec);
    if (len > 1 && idx1 < len && idx2 < len) {
    VecSwapItems(vec, idx1, idx2);
    }
    break;

    size_t i = extract_u32(data, offset, size) % VecLen(vec);
    size_t j = extract_u32(data, offset, size) % VecLen(vec);
    VecSwapItems(vec, i, j);
    }
    break;

    size_t i = extract_u32(data, offset, size) % VecLen(vec);
    size_t j = extract_u32(data, offset, size) % VecLen(vec);
    VecSwapItems(vec, i, j);
    }
    break;