Syntax
aDateTime = currentDateTime();
Semantics

Returns the current system date (UTC) of the Bridge as base type DateTime. Resolution is down to microseconds. Nevertheless, there is no guaranty of uniqueness.

You can get a formatted String representation of the DateTime object using the printDateTimeExpression() Operation.
Examples
set currentDateTime = currentDateTime();
Figure Creating Base Type Objects in section Creating Objects of Base and Complex Types shows an example using this function.