In the discretion and at the option of the governing body or bodies such bonds may be secured by a trust indenture by and between such municipality or municipalities and a corporate trustee, which may be a trust company or banking institution having powers of a trust company within or without the state. The ordinance or ordinances authorizing the issuance of the revenue bonds, and fixing the details thereof, may provide that such trust indenture may contain such provisions for protecting and enforcing the rights and remedies of bondholders as may be reasonable and proper, not in violation of law, including covenants setting forth the duties of the municipality or municipalities and the board in relation to the construction, reconstruction, establishment, acquisition, improvement, renovation, extension, enlargement, increase and equipment of the project and the repair (including replacements), maintenance, operation and insurance thereof, and the custody, safeguarding and application of all moneys, and may provide that the project shall be contracted for, carried out and paid for, under the supervision and approval of the consulting engineers employed or designated by the board and satisfactory to the original bond purchasers, their successors, assignees or nominees, who may be given the right to require the security given by contractors and by any depository of the proceeds of bonds or revenues of the works or other moneys pertaining thereto be satisfactory to such purchasers, their successors, assignees or nominees. Such indenture may set forth the rights and remedies of the bondholders or such trustee, or both. Except as in this article otherwise provided, the governing body or bodies may provide by ordinance or ordinances or in such trust indenture for the payment of the proceeds of the sale of the bonds and the revenues of the works to such officer, board or depository, as such body or bodies may determine for the custody thereof, and for the method of distribution thereof, with such safeguards and restrictions as such body or bodies may determine.