If a debt is secured by a security interest in a beneficial interest in a land trust or by a mortgage on land trust property, neither the validity or enforceability of the debt, security interest or mortgage nor the rights, remedies, powers and duties of the creditor with respect to the debt or the security shall be affected by the fact that the creditor and the trustee are the same person, and the creditor may extend credit, obtain such security interest or mortgage, and acquire and deal with the property comprising the security as though the creditor were not the trustee. The terms "land trust" and "beneficial interest" shall mean the following:
(a) "Land trust" means any express agreement or arrangement whereof a use, confidence or trust is declared of any land, or of any charge upon land, for the use or benefit of any beneficiary, under which the title to real property, both legal and equitable, is held by a trustee, subject only to the execution of the trust, which may be enforced by the beneficiaries who have the exclusive right to manage and control the real estate, to have possession thereof, to receive the net proceeds from the rental, sale, hypothecation or other disposition thereof, and under which the interest of the beneficiary is personal property only.(b) "Beneficial interest" means any interest, regardless of how small or minimal such interest may be, in a land trust, held by a trustee for the benefit of beneficiaries of such land trust.