§ 4-a. Age qualifications of voters. To vote at a corporate meeting of a corporation to which this chapter applies, persons, otherwise qualified to vote, shall be of full age unless (1) the age qualifications for voting at corporate meetings are fixed by or pursuant to an applicable provision in articles three through nineteen of this chapter, or (2) in the absence of such provision, the certificate of incorporation or a by-law adopted by the members of such corporation specifies an age, less than full age but not less than the age of sixteen years, at which persons otherwise qualified to vote at corporate meetings, shall be entitled to vote for all purposes or as to particular types or classes of matters to be acted on at such meetings.