function getStep(wizard, index)
{
    var steps = getSteps(wizard);

    if (index < 0 || index >= steps.length)
    {
        throwError(_indexOutOfRangeErrorMessage);
    }

    return steps[index];
}
Gets a specific step object by index.

@static
@private
@method getStep
@param index {Integer} An integer that belongs to the position of a step
@return {Object} A specific step object