[§571-55] Certification in lieu of oath. Whenever any testimony, declaration, deposition, certification or pleading in the family court is required or authorized to be on oath or affirmation, the person so required or authorized may testify, declare, depose, certify, or plead under "penalty of perjury" in such form as may be prescribed by the court. [L 1970, c 17, pt of §1]