code: def _get_slack_array_construct(self):
          
          bus_no = integer.setResultsName("bus_no")
          s_rating = real.setResultsName("s_rating") # MVA
          v_rating = real.setResultsName("v_rating") # kV
          v_magnitude = real.setResultsName("v_magnitude") # p.u.
          ref_angle = real.setResultsName("ref_angle") # p.u.
          q_max = Optional(real).setResultsName("q_max") # p.u.
          q_min = Optional(real).setResultsName("q_min") # p.u.
          v_max = Optional(real).setResultsName("v_max") # p.u.
          v_min = Optional(real).setResultsName("v_min") # p.u.
          p_guess = Optional(real).setResultsName("p_guess") # p.u.
          # Loss participation coefficient
          lp_coeff = Optional(real).setResultsName("lp_coeff")
          ref_bus = Optional(boolean).setResultsName("ref_bus")
          status = Optional(boolean).setResultsName("status")
  
          slack_data = bus_no + s_rating + v_rating + v_magnitude + \
              ref_angle + q_max + q_min + v_max + v_min + p_guess + \
              lp_coeff + ref_bus + status + scolon
  
          slack_data.setParseAction(self.push_slack)
  
          slack_array = Literal("SW.con") + "=" + "[" + "..." + \
              ZeroOrMore(slack_data + Optional("]" + scolon))
  
          return slack_array
docs: Returns a construct for an array of slack bus data.