/**
* <summary>
* Returns the start time of the dataset, relative to the Jan 1, 1970.
* <para>
* When the <c>YDataSet</c> object is created, the start time is the value passed
* in parameter to the <c>get_dataSet()</c> function. After the
* very first call to <c>loadMore()</c>, the start time is updated
* to reflect the timestamp of the first measure actually found in the
* dataLogger within the specified range.
* </para>
* <para>
* <b>DEPRECATED</b>: This method has been replaced by <c>get_summary()</c>
* which contain more precise informations.
* </para>
* <para>
* </para>
* </summary>
* <returns>
* an unsigned number corresponding to the number of seconds
* between the Jan 1, 1970 and the beginning of this data
* set (i.e. Unix time representation of the absolute time).
* </returns>
*/
public virtual long get_startTimeUTC()
{
return(_objref.get_startTimeUTC());
}