The objects of the Authority shall be to promote and secure the development of Delhi according to plan and for that purpose the Authority shall have the power to acquire, hold, manage and dispose of land and other property, to carry out building, engineering, mining and other operations, to execute works in connection with supply of water and electricity, disposal of sewage and other services and amenities and generally to do anything necessary or expedient for purposes of such development and for purposes incidental thereto:
     Provided that save as provided in this Act, nothing contained in this Act shall be construed as authorising the disregard by the Authority of any law for the time being in force.