e.g., To scan objects stored under `user-uploads/` prefix and remove versions older than one year.

```
{
    "Rules": [
        {
            "ID": "Removing all old versions",
            "Filter": {
                "Prefix": "users-uploads/"
            },

		if !fi.IsDir() {
			continue
		}

		// TODO(gri) remove extra pkg directory eventually
		goldenFile := filepath.Join("testdata", "src", "pkg", fi.Name(), "golden.txt")
		w := NewWalker(nil, "testdata/src/pkg")
		pkg, err := w.import_(fi.Name())
		if err != nil {
			t.Fatalf("import %s: %v", fi.Name(), err)
		}
		w.export(pkg)

		if *updateGolden {
			os.Remove(goldenFile)
			f, err := os.Create(goldenFile)

    assertTrue(result.remove(v0()));
    assertFalse(multimap().containsEntry(k0(), v0()));
    assertEquals(2, multimap().size());
  }

  @CollectionSize.Require(absent = ZERO)
  @MapFeature.Require(SUPPORTS_REMOVE)
  public void testPropagatesRemoveLastElementToMultimap() {
    Collection<V> result = multimap().asMap().get(k0());
    assertTrue(result.remove(v0()));
    assertGet(k0());
  }

# Create a replication user : repluser on dest alias
mc admin user add dest repluser repluser123

# create a replication policy for repluser
# Remove "s3:GetBucketObjectLockConfiguration" if object locking is not enabled, i.e. bucket was not created with `mc mb --with-lock` option
# Remove "s3:ReplicateDelete" if delete marker replication is not required
cat >replpolicy.json <<EOF
{
 "Version": "2012-10-17",
 "Statement": [
  {

        return delegate().iterator();
      }

      @Override
      public int size() {
        return delegate().size();
      }

      @Override
      public boolean remove(Object o) {
        return delegate().remove(o);
      }

      @Override
      public void clear() {
        delegate().clear();
      }
    };
  }

  @Override
  public @Nullable Entry<K, V> firstEntry() {

			if len(*lri) == 1 {
				// Remove the write lock.
				delete(l.lockMap, name)
			} else {
				// Remove the appropriate read lock.
				*lri = append((*lri)[:index], (*lri)[index+1:]...)
				l.lockMap[name] = *lri
			}
			delete(l.lockUID, formatUUID(args.UID, entry.idx))
			return true
		}
	}

	// None found return false, perhaps entry removed in previous run.
	return false
}

        if (cycle != null) {
            // remove edge which introduced cycle
            removeEdge(from, to);
            throw new CycleDetectedException(
                    "Edge between '" + from.label + "' and '" + to.label + "' introduces to cycle in the graph", cycle);
        }
    }

    void removeEdge(Vertex from, Vertex to) {
        from.children.remove(to);
        to.parents.remove(from);
    }

    }

    @Override
    public boolean remove(@Nullable Object o) {
      try {
        return super.remove(o);
      } catch (UnsupportedOperationException e) {
        for (Entry<K, V> entry : map().entrySet()) {
          if (Objects.equals(o, entry.getValue())) {
            map().remove(entry.getKey());
            return true;
          }
        }

   * Thus, calls like asMap().values().remove(someList) are safe because they are comparing a list
   * to a collection of other lists.
   */
  @SuppressWarnings("CollectionUndefinedEquality")
  public void testValuesRemove() {
    resetContainer(mapEntry(k0(), v0()), mapEntry(k1(), v0()), mapEntry(k0(), v3()));
    assertTrue(multimap().asMap().values().remove(singletonList(v0())));
    assertEquals(2, multimap().size());

   * Thus, calls like asMap().values().remove(someList) are safe because they are comparing a list
   * to a collection of other lists.
   */
  @SuppressWarnings("CollectionUndefinedEquality")
  public void testValuesRemove() {
    resetContainer(mapEntry(k0(), v0()), mapEntry(k1(), v0()), mapEntry(k0(), v3()));
    assertTrue(multimap().asMap().values().remove(singletonList(v0())));
    assertEquals(2, multimap().size());