pub unsafe extern "C" fn sqlite3changeset_invert_strm(
    xInput: Option<unsafe extern "C" fn(pIn: *mut c_void, pData: *mut c_void, pnData: *mut c_int) -> c_int>,
    pIn: *mut c_void,
    xOutput: Option<unsafe extern "C" fn(pOut: *mut c_void, pData: *const c_void, nData: c_int) -> c_int>,
    pOut: *mut c_void
) -> c_int