dart static method
Returns the standard Dart duration format.
Implementation
static DurationPrinter dart() => DurationPrinter((builder) => builder
..sign()
..part(TimeUnit.hour, FixedNumberPrinter())
..literal(':')
..part(TimeUnit.minute, FixedNumberPrinter(padding: 2))
..literal(':')
..part(TimeUnit.second, FixedNumberPrinter(padding: 2))
..literal('.')
..part(TimeUnit.millisecond, FixedNumberPrinter(padding: 3))
..part(TimeUnit.microsecond, FixedNumberPrinter(padding: 3)));