stringToUTC static method
Creates a function expression which evaluates to the ISO 8601 UTC date
time string of the given ISO 8601 date string expression.
Valid date strings must start with a date in the form YYYY-MM-DD (time
only string are not supported).
Times can be of the form HH:MM, HH:MM:SS, or HH:MM:SS.FFF. The
leading zero is not optional (i.e. 02 is ok, 2 is not). Hours are in
24-hour format. FFF represent milliseconds, and trailing zeros are
optional (i.e. 5 == 500).
The time zone can be in one of three forms: (+/-)HH:MM, (+/-)HHMM and
Z which represents UTC.
If no time zone is present the the device local time zone is used.
Implementation
static ExpressionInterface stringToUTC(ExpressionInterface expression) =>
UnaryExpression('str_to_utc()', expression);