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

This method accesses the Time Created DataSet (2:60). The DataSet designates the time the intellectual content of the objectdata current source material was created rather than the creation of the physical representation.

Contains 11 bytes, consisting of graphic characters. Represented in the form HHMMSS-HHMM. Follows ISO 8601 standard.