while holding the position, the member may file a written, irrevocable election to begin receiving, while holding the position, retirement benefits to which the member would be entitled by age and service. A member who does not make the irrevocable election while holding the position continues to accrue service credit for any period from the date the member qualifies to make the election under this subsection to the date on which the member files a retirement application or the date on which the member ceases to hold the position, whichever occurs first.
IC 5-10.2-4-8.2