set     bool

	Prefix Prefix

	ObjectSizeGreaterThan int64 `xml:"ObjectSizeGreaterThan,omitempty"`
	ObjectSizeLessThan    int64 `xml:"ObjectSizeLessThan,omitempty"`

	And    And
	andSet bool

	Tag    Tag
	tagSet bool

	// Caching tags, only once
	cachedTags map[string]string
}

// MarshalXML - produces the xml representation of the Filter struct

		set: true,
		And: And{
			Tags: []Tag{},
		},
		andSet: true,
	}

	oneTag := Filter{
		set: true,
		And: And{
			Tags: []Tag{{Key: "FOO", Value: "1"}},
		},
		andSet: true,
	}

	twoTags := Filter{
		set: true,
		And: And{
			Tags: []Tag{{Key: "FOO", Value: "1"}, {Key: "BAR", Value: "2"}},
		},
		andSet: true,
	}

	tests := []struct {
		filter   Filter