public HashSet<CollectData> selectCollects(int regency,int cid){
  HashSet<SignedObject> c=collects.get(regency);
  if (c == null)   return null;
  return normalizeCollects(getSignedCollects(c),cid,regency);
}

public HashSet < CollectData > selectCollects ( int regency , int cid ) { HashSet < SignedObject > c = collects . get ( regency ) ; if ( c == null ) return null ; return normalizeCollects ( getSignedCollects ( c ) , cid , regency ) ; }
fetchs a set of correctly signed and normalized collect data structures
