Notwithstanding any other provision of this chapter, a contractor and a contracting officer may use any alternative means of dispute resolution under subchapter
IV of chapter
5 of title
5, or other mutually agreeable procedures, for resolving claims. The contractor shall certify the claim when required to do so as provided under subsection (c)(1) of this section or as otherwise required by law. All provisions of subchapter
IV of chapter
5 of title
5 shall apply to such alternative means of dispute resolution.