Function librocksdbsys::crocksdb_writebatch_delete_range_cf

pub unsafe extern "C" fn crocksdb_writebatch_delete_range_cf(
    batch: *mut DBWriteBatch, 
    cf: *mut DBCFHandle, 
    begin_key: *const u8, 
    begin_keylen: size_t, 
    end_key: *const u8, 
    end_keylen: size_t
)