pub unsafe extern "C" fn rocksdb_writebatch_wi_iterate(
b: *mut rocksdb_writebatch_wi_t,
state: *mut c_void,
put: Option<unsafe extern "C" fn(arg1: *mut c_void, k: *const c_char, klen: usize, v: *const c_char, vlen: usize)>,
deleted: Option<unsafe extern "C" fn(arg1: *mut c_void, k: *const c_char, klen: usize)>,
)