Method returnsthe tag value if the tag is present in the metadata tree, or null otherwise.

This method accesses the Time Sent DataSet (1:80). The DataSet indicates the time the service sent the material.

Contains 11 bytes, consisting of graphic characters. Uses the format HHMMSS-HHMM where HHMMSS refers to local hour, minute, and seconds and HHMM refers to hours and minutes ahead (+) or behind (-) Universal Coordinated Time as described in ISO 8601.