stepAriaLabel method
Implementation
String stepAriaLabel(StepDirective step) => _stepAriaLabel[step] ??=
_stepAriaAnnounce(step.index + 1, steps.length, step.name);
String stepAriaLabel(StepDirective step) => _stepAriaLabel[step] ??=
_stepAriaAnnounce(step.index + 1, steps.length, step.name);