float SVGAnimationElement::getStartTime(ExceptionState& exceptionState) const
{
    SMILTime startTime = intervalBegin();
    if (!startTime.isFinite()) {
        exceptionState.throwDOMException(InvalidStateError, "No current interval.");
        return 0;
    }
    return narrowPrecisionToFloat(startTime.value());
}
float SVGAnimationElement::getStartTime() const
{
    return narrowPrecisionToFloat(intervalBegin().value());
}