(M) The establishment of a fund or funds for the creation of a debt service reserve, a renewal and replacement reserve, or such other funds or reserves as the authority may approve with respect to the financing and operation of any project, facility, or undertaking of the authority and as may be authorized by any bond resolution, trust agreement, indenture, or trust or similar instrument or agreement pursuant to the provisions of which the issuance of any revenue bonds, notes, or other obligations of the authority may be authorized. Any cost, obligation, or expense incurred for any of the purposes specified in this paragraph shall be a part of the cost of the project, facility, or undertaking of the authority and may be paid or reimbursed as such out of the proceeds of revenue bonds, notes, or other obligations issued by the authority or as otherwise authorized by this chapter.