code: def where(cls, where_clause="", start_position="", max_results="", qb=None):
          
          if where_clause:
              where_clause = "WHERE " + where_clause
  
          if start_position:
              start_position = " STARTPOSITION " + str(start_position)
  
          if max_results:
              max_results = " MAXRESULTS " + str(max_results)
  
          select = "SELECT * FROM {0} {1}{2}{3}".format(
              cls.qbo_object_name, where_clause, start_position, max_results)
  
          return cls.query(select, qb=qb)
docs: :param where_clause: QBO SQL where clause (DO NOT include 'WHERE')
          :param start_position:
          :param max_results:
          :param qb:
          :return: Returns list filtered by input where_clause