§ 10.00 Power of municipalities, school districts and district corporations to contract indebtedness. In addition to the power to contract indebtedness pursuant to sections 24.00, 25.00, 25.10, 29.00 and 29.20 of this article, a municipality, school district or district corporation shall have the power to contract indebtedness respectively for any municipal, school district or district corporation object or purpose set forth in paragraph a of section 11.00 of this title, or for a class of such objects or purposes when authorized under the provisions of section 31.00 of this article, if it is authorized by law to expend money for or to accomplish such object or purpose; provided, however, that it shall not be able to contract indebtedness to a greater extent than it is authorized by law to spend money for such object or purpose or class of such objects or purposes and provided also that this section shall not relieve any such unit of government of any duty imposed by law to include in its annual budget or tax levy or otherwise to pay from current funds all or part of any expenditure that it may make for such object or purpose or class of such objects or purposes.