code: def DbGetDevicePropertyHist(self, argin):
          
          self._log.debug("In DbGetDevicePropertyHist()")
          device_name = argin[0]
          prop_name = argin[1]
          return self.db.get_device_property_hist(device_name, prop_name)
docs: Retrieve device  property history
  
          :param argin: Str[0] = Device name
          Str[1] = Property name
          :type: tango.DevVarStringArray
          :return: Str[0] = Property name
          Str[1] = date
          Str[2] = Property value number (array case)
          Str[3] = Property value 1
          Str[n] = Property value n
          :rtype: tango.DevVarStringArray