RPTimerStep constructor
RPTimerStep({})
Creates a Timer Step with an identifier, title and duration.
The RPTimerStep is a step in which the user waits for timeout
before being allowed to proceed to next question.
Implementation
RPTimerStep(
{required String identifier,
required this.timeout,
required this.title,
this.playSound = false,
bool optional = false})
: super(identifier: identifier, title: title, optional: optional);