void ParseXSDTime(string xsdTime)
  Property Description  
    Argument xsdTime valid XML Schema time string  
    Description Populates this XmlDateTime with the value specified as a valid XML Schema time.  
    Remarks A valid time is a subset of the ISO 8601 standard comprising hh:mm:ss[.ff][[Z]|[[+|-]hh:mm]] where the parts in [...] are optional.
Throws: LtInvalidValueException thrown on parsing invalid values.
See: ParseXSDDateTime(string)
See: ParseXSDTime(string)