vesting in a trustee or trustees of such property, rights, powers and duties in trust as the authority may determine, which may include any or all of the rights, powers and duties of any trustee appointed by the holders of any bonds, notes or other obligations and limiting or abrogating the right of the holders of any bonds, notes or other obligations of the authority to appoint a trustee or limiting the rights, powers and duties of such trustee; (9) provision for a trust agreement by and between the authority and a corporate trustee which may be any trust company or bank having the powers of a trust company within or without the state, which agreement may provide for the pledging or assigning of any assets or income from assets to which or in which the authority has any rights or interest, and may further provide for such other rights and remedies exercisable by the trustee as may be proper for the protection of the holders of any bonds, notes or other obligations of the authority and not otherwise in violation of law. Such agreement may provide for the restriction of the rights of any individual holder of bonds, notes or other obligations of the authority. All expenses incurred in carrying out the provisions of such trust agreement may be treated as a part of the cost of operation of the authority. The trust agreement may contain any further provisions which are reasonable to delineate further the respective rights, duties, safeguards, responsibilities and liabilities of the authority, individual and collective holders of bonds, notes and other obligations of the authority and the trustees; (10) covenants to do or refrain from doing such acts and things as may be necessary or convenient or desirable in order to better secure any bonds, notes or other obligations of