func (it IteratorType) String() string {
	if it.isEmpty() {
		return string(IteratorTypeLatest)
	}
	return string(it)
}
String returns the IteratorType as string type.
If it's empty string, then returns `LATEST`.
package kinesis
const (
	IteratorTypeLatest      IteratorType = "LATEST"
	IteratorTypeTrimHorizon IteratorType = "TRIM_HORIZON"
)
type GetCondition struct {
	ShardID           string
	ShardIterator     string
	ShardIteratorType IteratorType
	Limit             int64
}
type IteratorType string