pub unsafe extern "C" fn sqlite3_autovacuum_pages(
db: *mut sqlite3,
arg1: Option<unsafe extern "C" fn(db: *mut c_void, arg1: *const c_char, arg2: c_uint, arg3: c_uint, arg4: c_uint) -> c_uint>,
arg2: *mut c_void,
arg3: Option<unsafe extern "C" fn(db: *mut c_void)>,
) -> c_int