The TimePeriod type exposes the following members.
| Name | Description | |
|---|---|---|
| Duration | 
            Gets period duration or null if End is spesified or value can not be parsed.
              | |
| End | 
            Gets end of the period of time or null if Duration is specified or value can not be parsed.
              | |
| Start | 
            Gets start of the period of time or null if the start time can not be parsed.
              |