Section 150-A. County legislative body, other than board of supervisors

1.
  All the functions, powers, obligations  and  duties  which  by  law  are
  possessed  by  or  vested in the board of supervisors of a county may be
  exercised by an elected county  legislative  body,  by  whatsoever  name
  designated,  which  shall,  pursuant  to law, or order or judgement of a
  court of competent jurisdiction, be established in place of the board of
  supervisors of such  county.  All  acts  heretofore  performed  by  such
  elected county legislative body shall be valid if and to the extent that
  they  would  have been valid if performed by the board of supervisors of
  such county.
    2. Whenever the board of supervisors of a county  is  referred  to  or
  designated  in  any  law,  contract or document pertaining to any of the
  functions, powers, obligations and duties of such board, such  reference
  or designation shall be deemed to include the elected county legislative
  body,  by whatsoever name designated which, pursuant to law, or order or
  judgement  of  a  court  of  competent  jurisdiction,  shall  have  been
  established in place of the board of supervisors.