public void setDefaultOperator(final Operator defaultOperator) {
        this.defaultOperator = defaultOperator;
    }

    /**
     * Adds a filter to the query processing chain.
     * The filter chain is recreated after adding the filter.
     *
     * @param filter the filter to add
     */
    public void addFilter(final Filter filter) {
        filterList.add(filter);
        createFilterChain();
    }

		poolErrs = append(poolErrs, reduceWriteQuorumErrs(ctx, perPoolErrs, bucketOpIgnoredErrs, quorum))
	}

	if !opts.Recreate {
		// when there is no force recreate look for pool
		// errors to recreate the bucket on all pools.
		opts.Remove = isAllBucketsNotFound(poolErrs)
		opts.Recreate = !opts.Remove
	}

	g = errgroup.WithNErrs(len(sys.peerClients))

### Idempotent versions on delete markers

Duplicate delete markers are not created on MinIO buckets with versioning, if an application performs a soft delete on an object repeatedly - that object will only ever have a single DELETE marker for all such successive attempts. This is done to ensure that repeated soft deletes do not ever need multiple versions in the first place.

    builder.put(k1, v1);
    return builder.build();
  }

  /**
   * Returns an immutable multimap containing the given entries, in order. Repeated occurrences of
   * an entry (according to {@link Object#equals}) after the first are ignored.
   */
  public static <K, V> ImmutableSetMultimap<K, V> of(K k1, V v1, K k2, V v2) {

    builder.put(k1, v1);
    return builder.build();
  }

  /**
   * Returns an immutable multimap containing the given entries, in order. Repeated occurrences of
   * an entry (according to {@link Object#equals}) after the first are ignored.
   */
  public static <K, V> ImmutableSetMultimap<K, V> of(K k1, V v1, K k2, V v2) {

	NoLock     bool             // does not lock the delete bucket call if set to 'true'
	NoRecreate bool             // do not recreate bucket on delete failures
	Force      bool             // Force deletion
	SRDeleteOp SRBucketDeleteOp // only when site replication is enabled
}

// BucketOptions provides options for ListBuckets and GetBucketInfo call.
type BucketOptions struct {

			// herd upon start up sequence.
			time.Sleep(25*time.Millisecond + time.Duration(rand.Int63n(int64(100*time.Millisecond))))

			_, _ = sys.objAPI.HealBucket(ctx, buckets[index], madmin.HealOpts{Recreate: true})
			meta, err := loadBucketMetadata(ctx, sys.objAPI, buckets[index])
			if err != nil {
				return err
			}
			bucketMetas[index] = meta
			return nil
		}, index)
	}

	errs := g.Wait()

 * successful (non-null parameters), or failed (non-null throwable). The first common parameters of
 * each event pair are used to link the event in case of concurrent or repeated events e.g.
 * `dnsStart(call, domainName)` → `dnsEnd(call, domainName, inetAddressList)`.
 *
 * Events are typically nested with this structure:
 *
 *  * call ([callStart], [callEnd], [callFailed])

   * process in any way, for example being sent over RPC, or saved to disk. For a general-purpose,
   * non-cryptographic hash function that will never change behavior, we suggest {@link
   * #murmur3_128}.
   *
   * <p>Repeated calls to this method on the same loaded {@code Hashing} class, using the same value
   * for {@code minimumBits}, will return identically-behaving {@link HashFunction} instances.
   *

#### Directory Structure { #directory-structure }

You should now have a directory structure like:

```
.
├── app
│   ├── __init__.py