Every code county by enactment of local law in the manner prescribed in this article may provide for the issuance by the county of bonds payable as to principal and interest solely from the revenues of one or more revenue-producing projects of the county, which bonds shall not constitute an indebtedness of the county to which its faith and credit or taxing power are pledged; and nothing contained in this subtitle shall be construed as a limitation on the power of a code county to issue revenue bonds under the provisions of any applicable general law or to make provision by local law for the issuance of revenue bonds.